RMTech Sample Written Test
THUSSAT中学生标准学术能力2023-2024学年高三上学期9月诊断性测试英语试卷(Word版含
THUSSAT中学生标准学术能力2023-2024学年高三上学期9月诊断性测试英语试卷（Word版含答案，无听力音频及听力原文）中学生标准学术能力诊断性测试2023年9月测试英语参考答案1-5 BCDCD 6-10 BCBDA 11-15 CBDCA 16-20 FACGE21-25 BACDC 26-30 DABDC 31-35 BBCAD36．born 37．to 38．to study 39．striking 40．has had 41．unforgettable 42．whose 43．difficulty 44．was published 45．it作文参考：Dear Ben,It is a pleasure to know that you have finished the journey in China. You mentioned which gift is most suitableto bring back to your country, and I strongly recommend Chinese tea, especially the famous Yunnan Pu-erh tea. Dueto the reason that it has a rich history in China and is a great choice if you want to explore the depths of Chinese teaculture. What’s more, it has the function of help you lose weight as well as keep healthy. Hope my recommendationcan help you. By the way, welcome to China back again. Wish you a nicejourney.Yours,Li Hua短文改错：Running, especially outside, is good for ease anxiety. While it can definitely be hardly to get up and run the firsteasing hardcouple of days, the benefits start flowing in. Throughout the day you may feel energetic, less anxious, and happiermoreon account to the release of some waste in your body. A run a day do not scare the anxiety away for everyone, and itof does butis great to do everything actively. And if you run social, your anxiety can be lessened and your social time can besociallyincreased. Try running when you have a big test which is came up. Try running the next time when you need to sitcomingdown to study for a couple of hour.hours续写参考：My dad told the other two to keep moving; we’d follow shortly. He took my hands in his and squeezed. “I’mnot leaving you. It’s almost dark. We need to keep moving. I’ll help you.” “I can’t,” I said as the tears pooled in myeyes. “You can. Just take one tiny step at a time. Don’t look at the mountain. Keep your eyes focused on your feetand on me.” Dad never let go of my hands as he continued to encourage me.“Just one tiny step at a time,” Dad repeated as we climbed together. Some of my steps were so minuscule thatwe hardly moved at all, but I clung to the power in his words. Eventually, we did make it over the ridge, grateful tofind that it was the last formidable obstacle in our way. Years have passed since that hike, and Dad’s words havecontinued to be a lifeline for me. It might take me a little longer to conquer my mountains, but one tiny step at a timewill eventually get me where I need to be.第1 页共1 页{#{ABAIIUoQogoigAgAABQJAAJ AAgQCQgCFQiCFEiCGgQOkQBCk ACAAIoCGIoBGFRAAIAAEAoBAwABBFAAQBFAAAB=A}#A}=}#}中学生标准学术能力诊断性测试2023 年9 月测试英语试卷本试卷共150 分，考试时间100 分钟。
存储器测试
4k 16k 64k 256k 1M 4M 16M 64M
7 5 3 2 1.3 1 0.5 0.35
0.07 0.1 0.15 0.3 0.2 0.3 0.3 0.6
Time
* The failure rate may increase when a component is used in an 'unfriendly' environment, caused by a stress condition. * An important stress condition is the temperature.
Memory cell array
Read/write logic
Data
* For this model, one is only able to detect a fault.
Chap5. MEMORY TESTING.1
Testing Semies in semiconductor memories have been very impressive. * Their density (bit/chip & bit/area) is ever increasing. * Algorithms with a test time of order O(n^2) are no longer acceptable for testing current mega- and multimega-bit memory chip, where n is the number of bits. * The price of memory chips tends to be stable over longer periods of time. * This makes testing memories an area of concern for practitioners as well as theoreticians who are interested in new test algorithms.
Tektronix P6405 数据采集探头说明书
6
@
P6405 Data Acquisition Probe
Performance Check and Adjustment
Equipment Needed
• Pulse Generator and appropriate termination. Example: TEKTRONIX PG 502
Set the slide switch to the appropriate position for the unit under test. • When the slide switch is in the 50 kn position, a 50 kn resistor inside the probe is connected be-
4
@
P6405 Data Acquisition Probe
The Reset button pulls pin 5 on the Lerno connector high. When the SA 501 sees this line move, it resets its CRC and character latches.
Physical
Description 113 grams (4.0 oz)
1.64 m (64.5 in)
1.5 m (59 in)
pin 1-Coax center cond. 2-50 kfl (Switchable) 3-Red ind. light 4-Green ind. light 5-Reset Sw. sense 6-lnd. light common Connector shell - coax shield.
2. LOGIC LOW (GREEN) On indicates input is less than the low threshold. Off indicates input is greater than the low threshold. Flashing indicates a pulsing input transitioning through low threshold.
Extech 381395 5MHz 双通道数据记录多频率测试仪说明书
Ordering Information:381395..........5MHz Dual Channel Datalogging MultiScope ®Specifications subject to change without notice.Copyright © 2007-2008 Extech Instruments Corporation.All rights reserved including the right of reproduction in whole or in part in any form.Features:•Easy to use menu driven operation •Internal or External Triggering•Auto or Manual setup for horizontal and vertical scaling •Single shot mode•Window freeze locks waveform in the display •Roll Mode for slow repetition waveforms •Store and Recall up to 16 waveforms and setups•Sampling Time: 25MS/s Dual Channel; 50MS/s Single Channel •132 x 128 Pixel Super-Twist two level backlit display •Data Hold and Low Battery indication•MultiMeter functions include AC/DC Voltage, Resistance, Continuity,Frequency, RPM, Pulse Width, % Duty Cycle, Max/Min/Avg,Relative, and Compare (Go-NoGo)•USB Interface and software for transferring waveforms and dataDatalogging functionStores up to 17,000 data points with 25MS/s dual channel sampling time (50MS/s single channel)5MHz Dual Channel Datalogging MultiScope ®Specifications:Oscilloscope Bandwidth5MHzMax.Sample Rate per Channel 25MS/s (dual channel); 50MS/s (single channel)Record Length 512 single shot; 256 all other modes Sample ModeSingle shot,Roll,Normal Max Vertical Sensitivity 50mVMax Input Voltage 600V DC or AC rms Trigger Modes Auto,Normal,SingleTrigger Source Channel A,Channel B,External Trigger Coupling AC,DC Timebase1µS to 5S Input Impedance 1MΩSpecifications:Datalogger Memory17,000 points Sampling Rate 0.25S/s to 60S/s Sampling Mode Peak,Sampling Time ClockReal Time Clock Specifications:MultiMeterDC Voltage0.1mV to 1000V (0.3% basic accuracy)AC Voltage (TRMS)0.m1 to 750V (50-20kHz bandwidth)Resistance 0.001kΩto 5MΩContinuity Test voltage 1.7V; threshold 100 digits Frequency 0.01Hz to 10MHz RPM240-60,000Pulse Width 2µs to 500ms Duty Cycle25% to 75%Dimensions/Weight 7.7 x 3.5 x 1.6”(195 x 90 x 40mm)/1.6lbs (730g)Complete with meter,4 test leads with alligator clips,protective holster,Ni-MH battery pack,Universal AC adaptor/ charger,cable,Windows ®compatible software,and case。
LCZC11121046-E_CNAS[1]
![LCZC11121046-E_CNAS[1]](https://img.taocdn.com/s3/m/a7112ed426fff705cc170a3d.png)
Test Report Number ：LCZC11121046 Date ：Jan. 06, 2012 Page 1 of 14This test report shall not be reproduced except in full, without written approval of LCTECH .Applicant ： ZhongShan XiaoLan HengJi Printing Ink FactoryAddress ： No.7 industrial park, LuoSha Y ongNing, XiaoLan T own, ZhongShan CityDate of Received ： Dec. 29, 2011T esting Period ： From Dec. 29, 2011 to Jan. 06, 2012Report on the submitted sample said to be ：Item Name ： BLUE INKPlease see the next page(s) for details.Signed for and on behalf of LCTECH**********Test Report Number ：LCZC11121046 Date ：Jan. 06, 2012 Page 2 of 14This test report shall not be reproduced except in full, without written approval of LCTECH .Sample No.Test RequestConclusion01ASTM F963-08 Standard Consumer Safety Specification for Toy Safety (Clause 4.3.5) — Total Lead(Pb) content & Soluble Migrated Element content.Pass01 European Standard on Safety of Toys EN71-3:1994+A1:2000+AC:2002 — Migration of Certain Elements.Pass01 ISO 8124-3:2010 Safety of Toys － Part 3 : Migration of Certain Elements. Pass 01Australia Standard on Safety of T oys (ACCC) – Migration of Certain Elements.Pass01 US “Consumer Product Safety Improvement Act 2008 (CPSIA)” — Total Lead(Pb) content.Pass01 European Directive 91/338/EEC — Total Cadmium(Cd) content. Pass 01US TPCH Legislation(formerly CONEG) —Toxic Elements content in packaging material.Pass01 European Directive 94/62/EC (Amendment 2004/12/EC & 2005/20/EC) on Packaging and Packaging waste — Toxic Elements content.Pass01 European directive 2002/95/EC (RoHS) and it ’s amendment directives — Lead (Pb), Cadmium (Cd), Mercury (Hg), Hexavalent Chromium (Cr(VI)) and Polybrominated Biphenyls & Polybrominated Biphenyl Ethers (PBBs & PBDEs) content.Pass01 European Directive 2005/84/EC — DBP , DEHP , BBP contentPass 01Regulation (EC) No.1907/2006 (REACH) — Substances of Very HighConcern (SVHC) candidate list updated on Jun. 20, 2011. Testing of the 53 SVHC was performed by currently available analytical techniques.See Result or RemarkTest Report Number ：LCZC11121046 Date ：Jan. 06, 2012 Page 3 of 14This test report shall not be reproduced except in full, without written approval of LCTECH .1 TEST RESULT1.1 Total Lead(Pb) content & Soluble Migrated Element content — ASTM F963-08 Standard Consumer Safety Specification for Toy Safety (Clause 4.3.5) T est Method: CPSC-CH-E1003-09, determined by Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES).Test result (mg/kg)Test item01Maximum Limit(mg/kg)T otal Lead (Pb) ND 90T est Method: ASTM F963-08(clause 8.3), determined by Inductively Coupled Plasma OpticalEmission Spectrometer (ICP-OES).Test result (mg/kg)Test item01 Maximum Limit(mg/kg)Soluble Antimony (Sb) ND 60 Soluble Arsenic (As) ND 25 Soluble Barium (Ba) ND 1000 Soluble Cadmium (Cd) ND 75 Soluble Chromium (Cr) ND 60 Soluble Lead (Pb) ND 90 Soluble Mercury (Hg) ND 60 Soluble Selenium (Se)ND500Remark- ND = Not Detected (less than Report Limit).- Report Limit = 10mg/kg for total lead / 5mg/kg for soluble elements. - mg/kg = 0.0001% = ppm = parts per million.- T ested component 01 testing based on dry weight of sample.- The results were adjusted by subtracting analytical correction factor.Test Report Number ：LCZC11121046 Date ：Jan. 06, 2012 Page 4 of 14This test report shall not be reproduced except in full, without written approval of LCTECH .1.2 Migration of Certain Elements — European Standard on Safety of Toys - EN71-3:1994 +A1:2000+AC:2002 T est Method: EN 71-3:1994+A1:2000+AC:2002, determined by Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES).Test result (mg/kg)Test item01 Maximum Limit(mg/kg)Soluble Antimony (Sb) ND 60 Soluble Arsenic (As) ND25 Soluble Barium (Ba) ND1000 Soluble Cadmium (Cd) ND 75 Soluble Chromium (Cr) ND 60 Soluble Lead (Pb) ND 90 Soluble Mercury (Hg) ND 60 Soluble Selenium (Se)ND500Remark ：- ND = Not Detected (less than Report Limit). - Report Limit = 5mg/kg.- mg/kg = 0.0001% = ppm = parts per million.- The results were adjusted by subtracting analytical correction factor. - T ested component 01 testing based on dry weight of sample.1.3 Migration of certain elements : ISO 8124-3:2010 Safety of Toys - Part 3T est Method: ISO 8124-3:2010, determined by Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES).Test result (mg/kg)Test item01 Maximum Limit(mg/kg)Soluble Antimony (Sb) ND 60 Soluble Arsenic (As) ND 25 Soluble Barium (Ba) ND 1000 Soluble Cadmium (Cd) ND 75 Soluble Chromium (Cr) ND 60 Soluble Lead (Pb) ND 90 Soluble Mercury (Hg) ND 60 Soluble Selenium (Se)ND500Test Report Number ：LCZC11121046 Date ：Jan. 06, 2012 Page 5 of 14This test report shall not be reproduced except in full, without written approval of LCTECH .Remark ：- Report Limit = 5mg/kg.- ND = Not Detected (less than Report Limit). - mg/kg = Parts per million = ppm.- The results were adjusted by subtracting analytical correction factor. - T ested component 01 testing based on dry weight of sample.1.4 Migration of certain elements — Australia Standard on Safety of Toys (ACCC)T est Method: AS/NZS ISO 8124-3:2003, determined by Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES).Test result (mg/kg)Test item01 Maximum Limit(mg/kg)Soluble Antimony (Sb) ND 60 Soluble Arsenic (As) ND 25 Soluble Barium (Ba) ND 1000 Soluble Cadmium (Cd) ND 75 Soluble Chromium (Cr) ND 60 Soluble Lead (Pb) ND 90 Soluble Mercury (Hg) ND 60 Soluble Selenium (Se)ND500Remark ：- Report Limit = 5 mg/kg.- ND = Not Detected (less than Report Limit). - mg/kg = Parts per million = ppm.- The results were adjusted by subtracting analytical correction factor. - T ested component 01 testing based on dry weight of sample.1.5 Total Lead(Pb) content — US “Consumer Product Safety Improvement Act 2008 (CPSIA) ” T est Method: CPSC-CH-E1003-09, determined by Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES).Test result (mg/kg)Test item 01Maximum Limit T otal Lead (Pb)NDSee remarkTest Report Number ：LCZC11121046 Date ：Jan. 06, 2012 Page 6 of 14This test report shall not be reproduced except in full, without written approval of LCTECH .Remark ：- ND = Not Detected (less than Report Limit). - Report Limit = 10 mg/kg.- mg/kg = 0.0001% = ppm = parts per million.- T ested component 01 testing based on dry weight of sample.- The maximum limit is quoted from US “Consumer Product Safety Improvement Act 2008 (CPSIA) ”:-- 90 mg/kg (0.009%) for total Lead content in surface coating, Aug.14, 2009.-- 100 mg/kg (0.01%) for total Lead content in non-surface coating since Aug. 14, 2011.1.6 Total Cadmium(Cd) content — European Directive 91/338/EECT est Method: US EPA 3052(1996) & US EPA 6010C(2007), determined by Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES).Test result (mg/kg)Test item 01 Maximum Limit(mg/kg)T otal Cadmium (Cd)ND100Remark ：- ND = Not Detected (less than Report Limit). - Report Limit = 10mg/kg.- mg/kg = 0.0001% = ppm = parts per million.- T ested component 01 testing based on dry weight of sample.1.7 Toxic Elements content in packaging material —US TPCH Legislation(formerly CONEG)T est Method: Lead/ Cadmium/ Mercury – EPA 3052(1996), analysed by ICP-OES;Chromium(VI) – US EPA 3060A(1996), analysed by UV/VIS.Test result (mg/kg)Test item 01 Maximum Limit(mg/kg)Cadmium (Cd) ND -- Lead (Pb) ND -- Mercury (Hg) ND -- Chromium VI (Cr (VI)) ND -- Sum, Pb + Cd + Hg + Cr(VI)ND100Remark ：- ND = Not Detected (less than Report Limit). - Report Limit = 5 mg/kg.- mg/kg = 0.0001% = ppm = parts per million.Test Report Number ：LCZC11121046 Date ：Jan. 06, 2012 Page 7 of 14This test report shall not be reproduced except in full, without written approval of LCTECH .- “--” Not required.- Tested component 01 testing based on dry weight of sample.- The TPCH legislation has been adopted by nineteen states: California, Connecticut, Florida, Georgia, Illinois, Iowa, Maryland, Maine, Minnesota, Missouri, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, Virginia, Washington and Wisconsin.1.8 Toxic Elements content — European Directive 94/62/EC (Amendment 2004/12/EC & 2005/20/EC) T est Method: Lead/ Cadmium/ Mercury – US EPA 3052(1996), analysed by ICP-OES. Chromium(VI) – US EPA 3060A(1996), analysed by UV/VIS.Test result (mg/kg)Test item 01 Maximum Limit(mg/kg)Cadmium (Cd) ND -- Lead (Pb) ND -- Mercury (Hg) ND -- Chromium VI (Cr (VI)) ND -- Sum of (Pb + Cd + Hg + Cr(VI))ND100Remark ：- ND = Not Detected (less than Report Limit). - Report Limit = 5 mg/kg.- mg/kg = 0.0001% = ppm = parts per million. - “--” Not required.- T ested component 01 testing based on dry weight of sample.Test Report Number ：LCZC11121046 Date ：Jan. 06, 2012 Page 8 of 14This test report shall not be reproduced except in full, without written approval of LCTECH .1.9 Pb, Cd, Hg, Cr(VI) and PBBs & PBDEs content — European directive 2002/95/EC (RoHS) and it ’samendment directivesTest result (mg/kg)Test item01 Maximum Limit(mg/kg)Cadmium (Cd) ND 100 Lead (Pb) ND 1000 Mercury (Hg) ND 1000 Chromium(VI) (Cr 6+)ND 1000 Monobromobiphenyl (MonoBB) ND -- Dibromobiphenyl (DiBB) ND -- Tribromobiphenyl (TriBB) ND -- Tetrabromobiphenyl (TetraBB) ND -- Pentabromobiphenyl (PentaBB) ND -- Hexabromobiphenyl (HexaBB) ND -- Heptabromobiphenyl (HeptaBB) ND -- Octabromobiphenyl (OctaBB) ND -- Nonabromobiphenyl (NonaBB) ND -- Decabromobiphenyl (DecaBB) ND -- Sum of PBBsND 1000 MonobromodiphenylEther (MonoBDE) ND -- DibromodiphenylEther (DiBDE) ND -- Tribromodiphenyl Ether(TriBDE) ND -- TetrabromodiphenylEther (TetraBDE) ND -- PentabromodiphenylEther (PentaBDE) ND -- HexabromodiphenylEther (HexaBDE) ND -- HeptabromodiphenylEther (HeptaBDE) ND -- OctabromodiphenylEther (OctaBDE) ND -- NonabromodiphenylEther (NonaBDE) ND -- DecabromodiphenylEther (DecaBDE) ND -- Sum of PBDEsND1000Remark ：- ND = Not Detected (less than Report Limit). - mg/kg = 0.0001% = ppm = parts per million. - “--” Not required.- T ested component 01 testing based on dry weight of sample.Test Report Number ：LCZC11121046 Date ：Jan. 06, 2012 Page 9 of 14This test report shall not be reproduced except in full, without written approval of LCTECH .Test method and Report Limit ：Test itemTest methodReport Limit Cadmium (Cd) IEC 62321 :2008, determined by ICP-OES 5 mg/kg Lead (Pb) IEC 62321 :2008, determined by ICP-OES 5 mg/kg Mercury (Hg) IEC 62321 :2008, determined by ICP-OES 5 mg/kg Chromium(VI) (Cr 6+) IEC 62321 :2008, determined by UV-VIS 5 mg/kg PBBs IEC 62321 :2008, determined by GC-MS 5 mg/kg PBDEsIEC 62321 :2008, determined by GC-MS5 mg/kg1.10 DBP , DEHP , BBP Content — European Directive 2005/84/ECT est Method: US EPA 3540C(1996) & US EPA 8270D(2007), determined by Gas Chromatographic-Mass Spectrometric (GC-MS).Test result (mg/kg)Test item01 Maximum Limit(mg/kg)Dibutyl Phthalate (DBP) ND -- Diethyl Hexyl Phthalate (DEHP) ND -- Benzyl Butyl Phthalate (BBP) ND -- Sum of (DBP+DEHP+BBP)ND1000Remark ：- ND = Not Detected (less than Report Limit). - Report Limit = 50mg/kg.- mg/kg = 0.0001% = ppm = parts per million. - “--” = Not required.- Tested component 01 testing based on dry weight of sample. - The maximum limit is quoted from Directive 2005/84/EC .Test Report Number ：LCZC11121046 Date ：Jan. 06, 2012 Page 10 of 14This test report shall not be reproduced except in full, without written approval of LCTECH .1.11 SVHC content — Regulation (EC) No.1907/2006Result (%)No. SVHC Chemical testing item 01 1 AnthraceneAnthracene ※ND 2 4, 4’ -Diaminodiphenylmethane 4, 4’ -Diaminodiphenylmethane ND 3 Dibutyl Phthalate (DBP) Dibutyl Phthalate (DBP)※ND 4 Cobalt Dichloride Cobalt (Co) ND 5 Diarsenic Pentaoxide Arsenic (As)※ND 6 Diarsenic Trioxide Arsenic (As)※ND 7 Sodium Dichromate Hexavalent Chromium (Cr 6+)※ND 5-T ert-Butyl-2,4,6-Trinitro-M- 5-T ert-Butyl-2,4,6-Trinitro-M- 8Xylene (Musk-Xylene) Xylene (Musk-Xylene) NDBis (2-Ethyyl Hexyl) Phthalate Bis (2-EthyylHexyl) 9(DEHP)Phthalate (DEHP) ※NDHexabromocyclododecane Hexabromocyclododecane 10 (HBCDD) #1(HBCDD)NDShort Chain Chlorinated Short Chain Chlorinated 11 Paraffin (C10-C13)Paraffin (C10-C13) ND 12 Bis (Tributyltin) Oxide #4 Bis (Tributyltin) Oxide ND 13 Lead Hydrogen Arsenate Arsenic (As) and Lead (Pb)※ND 14 Triethyl ArsenateArsenic (As)※ND 15 Benzyl Butyl Phthalate (BBP) Benzyl Butyl Phthalate (BBP)※ND 16 Anthracene oil #5 Anthracene ※ND Anthracene oil,17Anthracene paste, distn.Lights #5Anthracene ※NDAnthracene oil, anthracene 18 paste, anthrancene fraction #5Anthracene ※NDAnthracene oil, 19 Anthracene-low #5Anthracene ※NDAnthracene oil, anthracene 20 paste #5Anthracene ※NDTest Report Number ：LCZC11121046 Date ：Jan. 06, 2012 Page 11 of 14This test report shall not be reproduced except in full, without written approval of LCTECH .Result (%)No. SVHCChemical testing item 01 21 Pitch, coal tar, high-temp #5 Anthracene ※ND Aluminiosilicate, Refractory 22Ceramic Fibres #2Silicon (Si) and Aluminium (Al) NDZirconia Aluminosilicate, Zirconium (Zr) , Silicon (Si) and 23 Refractory Ceramic Fibres #3Aluminium (Al)ND 24 Di-isobutylphthalate (DIBP) Di-isobutylphthalate (DIBP)※ND 25 2,4-Dinitrotoluene2,4-DinitrotolueneND 26 Tris(2-chloroethyl) phosphate Tris(2-chloroethyl) phosphate ND Hexavalent Chromium (Cr 6+)※,27 Lead chromateLead (Pb)NDLead chromate molybdate Hexavalent Chromium (Cr 6+)※,sulphate red(C.I. Pigment RedLead (Pb)※, molybdenum (Mo) 28 104)NDLead sulfochromate yellow Hexavalent Chromium (Cr 6+)※,29(C.I. Pigment Y ellow 34)Lead (Pb)※ND 30 Acrylamide Acrylamide ND 31 Trichloroethylene Trichloroethylene ND 32 Boric acid Boron (B) ND Disodium tetraborate, 33AnhydrousBoron (B)NDT etraboron disodium 34 heptaoxide, hydrateBoron (B)ND 35 Sodium chromate Hexavalent Chromium (Cr 6+)※ND 36 Potassium chromate Hexavalent Chromium (Cr 6+)※ ND 37 Ammonium dichromate Hexavalent Chromium (Cr 6+)※ ND 38 Potassium dichromate Hexavalent Chromium (Cr 6+)※ND 39 Cobalt(II) sulphate Cobalt (Co) ND 40 Cobalt(II) dinitrate Cobalt (Co) ND 41 Cobalt(II) carbonate Cobalt (Co) ND 42 Cobalt(II) diacetateCobalt (Co)NDTest Report Number ：LCZC11121046 Date ：Jan. 06, 2012 Page 12 of 14This test report shall not be reproduced except in full, without written approval of LCTECH .Result (%)No. SVHCChemical testing item 01 43 2-Methoxyethanol 2-Methoxyethanol ND 44 2-Ethoxyethanol 2-EthoxyethanolND 45 Chromium trioxide Hexavalent Chromium (Cr 6+)※ND Oligomers of chromic acid 46and dichromic acidHexavalent Chromium (Cr 6+)※ND 47 Strontium chromate Hexavalent Chromium (Cr 6+)※ ND 48 2-ethoxyethyl acetate 2-ethoxyethyl acetate ND 49 HydrazineHydrazineND 50 1-methyl-2-pyrrolidone 1-methyl-2-pyrrolidone ND 51 1,2,3-trichloropropane 1,2,3-trichloropropane ND 1,2-Benzenedicarboxylic acid, 1,2-Benzenedicarboxylic acid, di-C7-11-branched and lineardi-C7-11-branched and linear 52 alkyl esters (DHNUP)alkyl esters (DHNUP)ND1,2-Benzenedicarboxylic acid, 1,2-Benzenedicarboxylic acid, di-C6-8-branched alkyl esters,di-C6-8-branched alkyl esters, 53 C7-rich (DIHP)C7-rich (DIHP)NDRemark:- ND = Not Detected (less than Report Limit). - Report limit =0.005%.- % = percentage by weight.- SVHC = Substance Of Very High Concern.- ※ = Only the testing item marked with ※ is accredited by the CNAS.- The above SVHC concentrations were calculated by the content of identified corresponding Si, Zr, B, Co, As, Pb, Cr 6+) according to currently available analytical techniques. - Tested component 01 testing based on dry weight of sample.- #1 Hexabromocyclododecane(HBCDD), and all major diastereoisomers identified:( α, β, γ- - #2 Aluminosilicate Refractory Ceramic Fibres are fibres covered by index number 650-017-00-8 inpart 3, table 3.2 of Regulation (EC) No 1272/2008, and fulfil the two following conditions: a) Al 2O 3 and SiO 2 are present within the following concentration ranges:• Al 2O 3: 43.5 ~ 47 % w/w, and SiO 2: 49.5 ~ 53.5 % w/w, or • Al 2O 3: 45.5 ~ 50.5 % w/w, and SiO 2: 48.5 ~ 54 % w/w,b) fibres have a length weighted geometric mean diameter less two standard geometric errors of micrometers (μm).- #3 Zirconia Aluminosilicate Refractory Ceramic Fibres are fibres covered by index numberAnnex VI, part 3, table 3.2 of Regulation (EC) No 1272/2008, and fulfil the two followingTest Report Number ：LCZC11121046 Date ：Jan. 06, 2012 Page 13 of 14This test report shall not be reproduced except in full, without written approval of LCTECH .a) Al 2O 3, SiO 2 and ZrO 2 are present within the following concentration ranges:• Al 2O 3: 35 ~ 36 % w/w, and SiO 2: 47.5 ~ 50 % w/w, and ZrO 2: 15 ~ 17 % w/w,b) fibres have a length weighted geometric mean diameter less two standard geometric errors of micrometers (μm).- #4 Calculated concentration based on the identified tributyltin, TBT results.- #5 Calculated concentration based on the total concentration of the identified polyaromatic(PAHs), aromatic hydrocarbons and heterocycles results. Identity and ratio of each substance refer to the respective Annex XV dossiers submitted to the ECHA.- The SVHC proposed list is under evaluation by ECHA and may subject to change in the future. More please refer to: - In accordance with Regulation (EC) No. 1907/2006, any producer or importer of articles shall notify accordance with paragraph 4 of Article 7, if a substance meets the criteria in Article 57 and is identified accordance with Article 59(1) of the Regulation, if (a) the substance is present in those articles in totaling over one tonne per producer or importer per year; and (b) the substance is present in those above a concentration of 0,1%weight by weight (w/w).- Article 33 of Regulation (EC) No. 1907/2006 requires supplier of an article containing a substance criteria in Article 57 and identified in accordance with Article 59(1) in a concentration above 0,1% weight weight (w/w) shall provide the recipient of the article with sufficient information, available to the supplier, safe use of the article including as a minimum, the name of that substance.Referenced Test Method:1). US EPA 3550C:2007 Ultrasonic extraction & US EPA 8270D: 2007 Semivolatile organic Chromatography / mass Spectrometry (GC/MS).2). US EPA 3540C:1996 Soxhlet Extraction & US EPA 8270D: 2007 Semivolatile organic compounds Chromatography/mass spectrometry (GC/MS).3). US EPA 3060A:1996 Alkaline Digestion for Hexavalent Chromium US EPA 7196A:1992 Hexavalent (colorimetric) (UV-VIS Method).4). ISO 3613: 2000 Chromate conversion coatings on zinc, calcium, aluminum zinc-aluminum alloys - methods: Determination of hexavalent chromium content of colored chromate coating (UV-VIS 5). US EPA 3052:1996 Microwave assisted acid digestion of siliceous and organically based matrices & US EPA 6010C:2007 Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES). 6). US EPA 3050B:1996 acid digestion of sediments, sludges, and soils & US EPA 6010C:2007Coupled Plasma-Atomic Emission Spectrometry (ICP-AES).7). In-house method for testing boron compounds by water extraction.8). US EPA 8260C:2006 Head-Space GC method, Volatile organic compounds by Head-Space gasChromatography / mass Spectrometry (HS/GC/MS).Test Report Number ：LCZC11121046 Date ：Jan. 06, 2012 Page 14 of 14This test report shall not be reproduced except in full, without written approval of LCTECH .2 TESTED COMPONENTS01 Blue inkPhoto of the Sample**********************************************************************************************************************************LCZC11121046* End of Report。
CPU Sample Test讲稿
Intel CPU Sample Test一．C1E & EISTC1E功能简介C1E的全称是C1E enhanced halt state，它是一种可以令CPU省电的功能，开启后，CPU在空闲轻负载状态可以降低工作电压与倍频，这样就达到了省电的目的。
C1E halt state，是由HLT命令触发，然后处理器进入到低功耗挂起的状态，但是会调节倍频来逐级的降低处理器的主频，同时还可以降低电压。
EIST功能简介EIST全称为“Enhanced Intel SpeedStep Technology”，它能够根据不同的系统工作量自动调节处理器的电压和频率，以减少耗电量和发热量。
同时，由于发热问题得到解决，所以电脑机箱也不须使用太多额外的风扇进行散热，噪音问题也得以改善。
相同：表相上看基本是一样的，都是通过频率与电压调节给处理器节能的不同：1.触发机制不同：EIST要主板、BIOS、操作系统的全面支持，操作系统通过ACPI进行调节控制C1E是由HLT命令触发2.针对不同负载例如：Q6600 G0测试结果如下：C1E在轻载状态的节能效果最明显，相对于C1E关闭的情况，每小时可以节省7wh（0.07度）左右的电能；在重载的情况下，C1E不会带来任何节能效果；C1E也可以在超频状态下生效，并分为两种情况：一是采用默认电压的超频，C1E产生作用的方式与默认频率没有区别；二是加电压的超频，C1E将失去自动调压的功能，但是自动降低倍频仍然生效；EIST在系统重载的情况下，仍然可以发挥作用，起到减少耗电量和发电量的作用。
3.CPU频率和电压调节级别不同例如：C1E[Enable] EIST[Disable]Intel Core 2 Duo E8200 C-0 2.66Ghz在系统下静止后，调节电源管理模式：已平衡：Core Speed:1995.1 Multiplier:X6高性能：Core Speed:1995.1 Multiplier:X6C1E[Disable] EIST[Enable]Intel Core 2 Duo E8200 C-0 2.66Ghz在系统下静止后，调节电源管理模式已平衡：Core Speed:变化Multiplier: X6/X7高性能：Core Speed:2.66GHz Multiplier:X8结论：从上面的例子可以看出，EIST提供了更多的CPU频率和电压调节级别，因此可以比C1E更加精确的调节处理器的状态。
ATE Corporation 5070 5000V Megohmmeter 产品说明书
5000V Graphical Megohmmeter Model 5070Features• T rue Megohmmeter®• T est voltage combinations of 500V , 1000V , 2500V and 5000V • I nsulation measurements from 30k Ω to 10,000G Ω (10T Ω)• S electable and programmable test voltage (40 to 5100V) – three can be stored • A utomatic step voltage with programmable step and dwell times – three profiles can be stored, each with up to five steps • P rogrammable temperature compensation of resistance readings • L arge graphic display with five line alphanumeric display and graph of all test results • A utomatic calculation of DAR, PI and DD ratios• D irect measurement and display of Capacitance and Leakage Current • D isplay resistance, test voltage and run time • P rogrammable test run times and PI ratio times • S mooth and Alarm functions• A utomatic test inhibition (if live sample >25V)• A utomatic discharge and display of discharge voltage • G raphic and digital display of test voltage, resistance and more • B right blue electroluminescent b acklight • P rogrammable test voltage lock-out • P rogrammable alarm setting • A uto power-down when not in use• A C or DC powered with rechargeable NiMH batteries• R S-232 interface for direct printing of results (serial or parallel output)• 128kB memory for storing extensive field test data• C onfigure instrument and run tests f rom a PC• I ncludes DataView ®software for data storage, real timed isplay, analysis and report generation • R ugged, weatherproof field case• D esigned and built to IEC safety standards • E N 61010-1, 1000V Cat. III • D ouble Insulation • C E MarkApplications• T est insulation on cables,t ransformers, motors, generators, insulators and wiring i nstallations • H igh resistance or a bsorption tests • S pot reading tests• T imed resistance measurements • D ielectric Absorption Ratio (DAR) and P olarization Index (PI) tests • M ulti-layer insulation testing (Dielectric Discharge)• T est old or water damaged i nstallations over long time runs • M otor insulation r esistance m easurements • C omputer controlled production line testing • P redictive maintenance by storing results in PC for trend analysis • U ser selectable voltage testing toprovide application specific testingModel 5070 performing insulation test on a generator.Insulation can be subject to slow, gradual degradationover long periods of time, as well as s udden damage. The effects of moisture, dirt, c orrosion, chemical penetration and even v ibration can cause degradation of insulation. The effects of this degradation can easily be documented by using the automatic Polarization Index test f eature standard on all models. Comparing the results over time will provide valuable information for preventative maintenance measures.Key Functions– This function is very – Allows for the setting of a – Provides the flexibility – Gives the flexibility test voltage to – Program a test run time – provides the option to – Provides a direct print– Provides a graphic– Allows programming of three 40 and 5100V and – Provides the ability Model 5070 checking insulation resistance on feed cables toa three-phase motor.Functional DisplaysAlphanumeric and analog bargraph displays of Insulation Resistance, Leakage Current and T est Voltage during the test Insulation Resistance measurement graphically displayed at the completion of the test at the push of a buttonMove the vertical cursor to see Resistance, OutputVoltage and Elapsed Time values at the cursor positionDisplay of test results at the conclusion of the testTypical display in Setup mode showing some of theparameters that are user programmableT ypical setup screen for the Step Voltage functionStep Voltage start screen shows start and ending test voltage, test run time and some of the parameters to be monitoredTypical screen showing data recalled from stored memory; each test stored can be reviewed on screen both graphicallyand alphanumerically.SpecificationsMoDeL 5070Insulation TestsTest Voltage/Range500V 30kΩto 2000GΩ (2TΩ)1000V 100kΩto 4000GΩ (4TΩ)2500V 100kΩto 10,000GΩ (10TΩ)5000V 300kΩto 10,000GΩ (10TΩ) User Selectable Test Voltage Programmable:40 to 1000V: 10V increments;1000 to 5100V: 100V incrementsThree test voltages can be stored.Short Circuit Current <1.6mA ± 5%Accuracy 1kΩ to 40GΩ±5% of Reading ± 3cts40GΩ to 10TΩ±15% of Reading ± 10cts DAR (1 min/30 sec)(1)0.02 to 50.00PI (10 min/1 min & user programmable) 0.02 to 50.00()DD Current after 1 min0.02 to 50.00test voltage x capacitanceCapacitance Check 0.005 to 49.99µFMax resolution 1nF Leakage Current Measurement 0.00nA to 3mAMax resolution 1pA Programmable Run Time R(t) 1 min to 49 hrs 59 minSmooth Function (user selectable) Digital filtering stabilizesdisplay readingsAutomatic Step Voltage 3 profiles, each containing 5 steps programmable from 40 to 5100V.Dwell time programmable from 1 min to 10 hrs per step.Maximum total time for 5 steps is 59 hrs 59 min Temperature Correction Operator programmable reference temperature and device undertest temperature with automatic temperature correction of resistance Discharge After Test AutomaticDischarge Voltage Display YesVoltage Test/Safety Check 0 to 1000V ac/dc (16 to 420H z), 1V ResolutionVoltage Warning Indicator Yes >25VTest Inhibition(2)Yes >25VGuard Terminal Yes – adjustable from 25 to 1000Vdepending on test voltage range in usePower Source Eight NiMH rechargeable batteriesLine power: 85 to 256V ac (50/60Hz)Dimensions10.63 x 9.84 x 7.09" (270 x 250 x 180mm)Weight9.5 lbs (4.3kg)Protection Index IP53Backlight Blue electroluminescentDisplay Size 3.75 x 3" (93 x 75mm)Display Graphical: 320 x 240 resolutionReport Print out Direct to Printer Yes – preset formatStorage of Readings over Time R(t)128kB memoryProgrammable Reading Intervals 5 sec to 15 minTest Voltage Display YesElapsed Test Time Display YesReal Time/Date Display YesTest Voltage Lock-out User programmedStorage of Test Results Stores over 1500 test results Communication Port RS-232PC Software/Report Generation Yes, DataView® (included)PC operation of Megohmmeter YesSafety Rating EN 61010-1, 1000V Cat. IIIDouble Insulation YesCE Mark Yes(1)DAR times are programmable in the Model 5070(2)Inhibit voltage is selectable at 3, 10 or 20% of test voltageModel 5070 easily configures and runs right from a PC.FeaturesC onfigure all functions of the Megohmmeter Model 5070Print reports of all test results• S elect test voltage and run tests from your computer with a simple click and execute process • C apture and display data in real time• R etrieve data from the instrument’s m emory: Over 1500 insulation resistance measurements • D isplay DAR, PI and DD ratios • P lot graphs of manual and timed tests• I nclude your analysis in the c omments section with the report • S tore a library of setups for different a pplications • C ertification of results through report generationDataView ®Software for Model5070Four tabbed dialog boxes allow for clear and easy setup of all functions of the Model 5070, including setup for variable voltage and alarmset points, as well as step voltage tests and temperature compensation.A simple press of the download button from either the setup or run d ialog boxes will show alltest results stored in the Model 5070.Each test will be stored as its own file and may be given its own unique file name.nsulation resistance Insulation resistance Run test and d isplay text and graphical results from one dialog box. Model 5070 also displays step voltage.Reports may be d isplayed on yourPC and printed. Each report includes all test results in a tabular and graphic f ormat, as well as operator and test sitei nformation. Comments typed in at time ofstorage will also be included.DataView® is included with the Model 5070 DataView® software provides a convenient way to configure and c ontrol Megohmmeter tests from your c omputer. Through the use of two clear and easy-to-use d ialog boxes, all f unctions of the Model 5070 can be c onfigured and tests can be i nitiated. Results can be d isplayed in real time and stored in your PC. Reports may be p rinted along with the o perator’s c omments anda nalysis.Minimum System Requirements:•W indows® 2000/XP/Vista•128MB of RAM for Windows® 2000(256MB recommended)256MB of RAM for Windows® XP512MB of RAM for Windows® Vista•80MB of hard disk space(200MB recommended)•CD-ROM DriveAccessoriesThe Model 5070 includes soft accessory bag with one red, one blue and one black lead with integral 5000V rated hippo clips, one jumper lead for use with guard terminal, rechargeable battery, US 120V power cord and user manual.Optional 5000V Lead setCatalog #2119.76DataView ® for Model 5070 (included)Cable, PC RS-232, DB9 F/F 6 ft null modem cablefor Model 5070 (included)Catalog #2119.45Cable, PC RS-232, DB9 F/F 6 ft (for serial printer)Catalog #2119.46ConstructionCATALoG No. M egohmmeter Model 5070 (Digital, with Graphical Display, Backlight, Alarm, Timer, 500V , 1000V , 2500V , 5000V ,Auto DAR/PI/DD, RS-232 w/DataView ® software)....................................................Cat. #2130.30I ncludes soft accessory bag, one red, one blue and one black lead with integral 5000V rated hippo clips, one jumperlead for use with guard terminal, one RS-232 DB9 F/F 6 ft null modem cable, rechargeable battery pack, DataView ® software,US 120V power cord and user manualAccessories (Optional)Cable, PC RS-232. DB9 F/F 6 ft Null Modem Cable .................................................Cat. #2119.45Cable, PC RS-232. DB9 F/F 6 ft (for serial printer) ..................................................Cat. #2119.46 L eads, set of three, 10 ft color-coded rated at 5000V max ............................................Cat. #2119.76 (one red, one blue and one black lead, one red, one blue and one black alligator clip)L eads, set of three, 10 ft color-coded rated at 5000V max ............................................Cat. #2119.85 (one red, one blue and one black lead with integral 5000V rated hippo clips – Jumper leader not included)L eads, set of three, 25 ft color-coded rated at 5000V max ............................................Cat. #2119.86 (one red, one blue and one black lead with integral 5000V rated hippo clips – Jumper leader not included)L eads, set of three, 45 ft color-coded rated at 5000V max ............................................Cat. #2119.87(one red, one blue and one black lead with integral 5000V rated hippo clips – Jumper leader not included)Input terminal (+)Backlit 320 x 240 graphical display AC power input Fuse holderInput terminal (G)Input terminal (–)Rotary selection switchRS-232 serial i nterface port Start/Stop buttonE ight function buttonsContact Usunited States & Canada:Chauvin Arnoux®, Inc.d.b.a. AEMC® Instruments200 Foxborough Blvd.Foxborough, MA 02035 USA(508) 698-2115 • Fax (508) 698-2118Customer Support – for placing an order, obtaining price & delivery:************************Sales Department – for general sales information:**************Repair and Calibration Service – for information on repair & calibration, obtaining a user manual: ***************Technical and Product Application Support – for technical and application support:*****************Webmaster – for information regarding :******************South America, Central America, Mexico, Caribbean, Australia & new Zealand:Chauvin Arnoux®, Inc.d.b.a. AEMC® Instruments15 Faraday DriveDover, NH 03820 USA(978) 526-7667 • Fax (978) 526-7605***************All other countries:Chauvin Arnoux SCA190, rue Championnet75876 Paris Cedex 18, France33 1 44 85 45 28 • Fax 33 1 46 27 73 89***********************。
德意志银行面经
德意志银行面经发现DB版略冷清，不造是不是大家都太低调了，想简单聊一下冷门的RISK项目。
估计很多同学都和LZ一样觉得这个项目竞争小，投着试试作为DB的敲门砖，抱有这种心态的人很多，所以投的人其实并不少。
但考虑到大神们都奔IBD、Markets而去了，所以项目的竞争程度的确没那么大，我觉得凡是真正把risk management作为自己职业选择之一，有过相关经验/准备的人都是有希望最后拿到offer的。
LZ申的是analyst intern program-risk。
大概十一月底压着ddl做的网申和OT，没做啥准备，觉得verbal的时间略紧，感觉不是很好。
申完后的几天惴惴不安以为会有电面啥的，LZ显然是多虑了，因为从此之后再无消息。
直到一月中旬的时候接了个隐藏号码的电话，竟然是去SH office onsite written test的通知，之前以为这种电话90%是诈骗电话所以拒接过两三个的样子，想起可能是DB或别家之前打来的电话，肠子都悔青了。
回来翻论坛发现1个月前就有小伙伴参加过这个test，猜想可能是第一批没招到合适的人所以再来一批？这是备胎逆袭的节奏麽。
笔试时间一个小时，还是BJ-SH同时笔试也是醉了，内容LZ完全没准备到，所以感觉发挥很烂，心里想着大概要悲剧了，就没继续准备面试。
结果几天后接到了first-round interview的通知（PS 好像他家很喜欢晚上6点之后打电话通知面试），由于之前外资行面试经历为0，LZ过了很不淡定的两天。
一面的形式是2轮 F2F，预定时长各一个小时，第一轮见的两个姐姐感觉貌似是hr，但也问了一些简历相关职位相关的tech question，LZ显然是过于紧张了，答得无比磕巴+凌乱，只面了三十多分钟就结束了，当时想着肯定炮灰了。
在外面休息了蛮长时间才到第二轮，因为有炮灰心态所以似乎不那么紧张了，第二轮是个外国Director和他的助手（估计是个入职不久的analyst MM）。
万唯中考英语作文电子版2023分年级单元
万唯中考英语作文电子版2023分年级单元全文共6篇示例，供读者参考篇1My Super Cool English Exam Book!Oh my gosh, you guys! I'm so excited to tell you about this really cool English exam book I just got. It's called the "Yinwei English Exam Composition E-Book 2023" and it's seriously the best thing ever for studying for my English exams this year!First of all, the book is divided into different sections for each grade level, which is awesome. So there's a part just for 3rd graders like me, a part for 4th graders, 5th graders, and all the way up to 6th grade. That means all the practice questions and sample essays are perfectly matched to what we're learning in our grade. No more wasting time on stuff that's too easy or too hard!But what makes this book really unique is that it's also separated into units that follow along with the units we're doing in our regular English textbooks at school. Isn't that so smart? Each unit covers the grammar, vocabulary, and topics that we just learned about. The practice ties in perfectly with our lessons.There are tons of cool features packed into this e-book too. My favorite part is definitely the model exam compositions that show examples of really well-written essays. The examples are annotated which explains why they are good and what writing skills the author used. By reading through the samples, I can pick up on what makes a bangin' essay.The book also has a ton of writing prompts and exercise questions for each unit. They're not boring at all though! The prompts are all about fun, engaging topics that make me actually want to write about them. Like one prompt asks you to write a story about going on an exciting adventure with your friends. Who wouldn't want to write about that?Another awesome section gives loads of useful phrases and sentence starters categorized by different writing purposes. Like if I need transitions to compare and contrast, there's a list of great phrases to pick from. Or if I'm trying to summarize a story, I can use the summary sentence templates. This helps a ton when I get stuck on how to properly express something.But of course, studying wouldn't be complete without practice tests, right? The Yinwei book has loads of full practice exam sections for each grade. The questions cover all the skills we need like writing essays, answering comprehension questions,filling out forms, and more. By doing these, I can get ready for the real exam format and time pressure. Although I have to admit, doing practice tests isn't my favorite part...The best part about this whole e-book though, is that it's interactive! On the digital version, you can have your writing scored by an AI that gives you feedback. It's like having a private writing tutor. The AI reviews your grammar, sentence structure, vocabulary and more to let you know what areas need work. That's just so cool and futuristic.There are also video lessons and audio clips included that correspond to each unit. For example, in the unit about writing instructions, there is a video explicitly showing the steps for properly making instructions clear and organized. Having videos to watch makes everything easier to understand.With all these incredible study resources packed into onee-book, I really feel confident that I'll ace my English exams this year. The Yinwei Composition e-book covers everything I need in a fun, interactive way that doesn't make studying torture. I'm so glad my school assigned us this awesome book. Thanks for listening to me rave about it - I could honestly go on and on! If you're looking for the best way to prepare for your English exams, you gotta check out this e-book. It's simply the best!篇2Here's an essay about "Yinwei's English Composition E-book 2023 Edition" in around 2000 words, written from the perspective of an elementary school student:My Favorite English Book: Yinwei's Awesome Compositions!Hi there! My name is Lulu, and I'm a 5th grader who just loves learning English. Guess what? I have this super cool English book that's helped me become such a great writer. It's called "Yinwei's English Composition E-book 2023 Edition," and it's the best book ever!I remember when I first got this book last year. My English teacher, Ms. Roberts, told us we'd be using it for writing practice. At first, I wasn't too excited because, well, writing can be kind of boring sometimes. But as soon as I opened the book, I knew it was going to be fun!The book is divided into different grade levels, which is really helpful. It starts with simple sentences for the little kids and gets harder as you go up. But don't worry, even the advanced stuff is easy to understand because it's written just for kids like us.What I love most about "Yinwei's English Compositions" are the topics. They're all about things we can relate to as kids – like our favorite toys, games, foods, and holidays. There are even sections on telling funny stories about your family or pets. How cool is that?Each unit has loads of example sentences and paragraphs to help you get started. There are also lots of vocabulary words and grammar tips. My favorite part is the colorful pictures and illustrations on every page. They make the lessons so much more enjoyable and easier to remember.One of the units I really enjoyed was about describing your dream vacation. I wrote all about going to Disney World and riding the epic Space Mountain rollercoaster. It was so much fun imagining that adventure! Another great unit was on writing movie reviews. I got to share my thoughts on my all-time favorite flick, "The Lego Movie." Awesome, right?What else makes this book so fantastic? Well, it's an e-book, which means it's digital and interactive. You can do all the writing exercises right on your tablet or computer. And get this – it even has speech recognition, so you can practice your pronunciation out loud! How high-tech is that?The best part is that my teacher can send feedback and grades directly through the e-book. She leaves nice comments on my work, which really helps me improve. I've gotten so many gold stars and smiley face stickers!Thanks to "Yinwei's English Composition E-book," writing has become one of my favorite subjects. My parents are super proud of all the progress I've made. Who knows, maybe I'll become a famous author one day!If you're learning English, you've got to get this book. It's fun, it's easy to use, and it will make you a writing superstar in no time! Just ask my teacher – she says my compositions areoff-the-charts amazing. I have "Yinwei's English Compositions" to thank for that.Well, that's all for now. I need to start working on my next writing assignment – a short story about my dream pet unicorn! Maybe I'll win a pizza party for my class. Wish me luck!篇3My Big Sister's Awesome English Book for the Big Test!Hey guys! I'm so excited to tell you about this really cool English book my big sister Wei is using to get ready for her hugemiddle school test. It's called "Wan Wei's 2023 Middle School Entrance Exam English Essay E-book" and it's separated into different grade levels and units. So neat!My sister is in 6th grade, so she's looking at the 6th grade units right now. Unit 1 is all about introducing yourself and talking about your family and hobbies. Wei showed me some of the sample essays and they have really simple sentences like "My name is Wei Wan. I am 12 years old. I live in Beijing with my mom, dad, and little brother."The book gives tips on how to make your intro paragraph catchy by using rhetorical questions or interesting facts. For example, one sample started "Did you know that Beijing has over 21 million residents? Well, I'm one of them!" How cool is that? I'll definitely use a hook like that when I do my middle school essays.Unit 2 covers describing your daily routine and school life. There are word banks with tons of useful vocabulary like "I wake up at 6 AM" and "I attend math class at 9 AM." My sister has been working on transitional phrases too, like "After that, I..." and "Subsequently, ..." to make her writing flow better.What I thought was really smart is how the book gives actual student essays as examples, and then it analyzes what's goodand bad about each one. Some have great details but messy organization, while others have an engaging voice but too many grammar mistakes. I can learn from checking out the strong and weak points.The units in the later grades get way more challenging. Like Unit 5 for 8th graders is all about argumentative essays and using persuasive techniques. You have to develop a clear thesis statement and incorporate lots of evidence from outside sources. Those essays look hard but amazing practice for academic writing in university one day.Another difficult unit is on expository essays that objectively explain abstract concepts like "beauty" or "success." You really have to extend your vocabulary and use sophisticated sentence structures. I can't wait until I'm old enough to tackle those!But what I thought was the coolest part of this e-book is all the supplemental features. There are video tutorials where teachers go through each unit and give more examples. And there are discussion board forums where kids can post practice essays and get feedback from others.There are also tons of interactive quizzes and games related to the units. Like for the narrative writing unit, you can tryre-writing famous story plots in your own words. Or for the uniton descriptive paragraphs, you zoom in on pictures and write vivid descriptions of them. Such an awesome way to learn!The book is formatted beautifully for reading on a tablet too. All the texts are clean and easy to navigate, with functions to bookmark pages or add multimedia notes. My sister uses a stylus to annotate and underline key phrases right on the screen. How convenient!What I really respect about this e-book is how it breaks down the different essay types in such an organized,step-by-step way. Younger kids like me can start with the basics of simple sentences and vocabulary. Then each unit slowly gets harder until you're writing sophisticated, college-level essays by the end.I overheard my parents telling Wei that consistent practice with this book will not only help her slay the big middle school test, but also turn her into a strong writer for the long run. She'll be able to express herself clearly and put together persuasive arguments for any situation in life.I can't wait until I'm oldNehough to start working through this amazing e-book myself! For now, I'll keep getting tips and advice from Wei. She's been working so hard and I know she's going to do awesome on her exam. Getting into a great middleschool is her biggest goal, and I'm rooting for her all the way. Fighting Wei! Let's get that acceptance letter!篇4Hi friends! My name is Lucy and I'm a 5th grader. Today I want to tell you all about this really cool e-book my English teacher showed us called "Middle School English Composition E-Book 2023 by Grade Level Unit"! It's super awesome and helped me get way better at writing English compositions.The e-book is divided into different sections for each grade level from 6th grade all the way up to 9th grade. That way, no matter what grade you're in, there are composition lessons and examples perfect for your age and skill level. Isn't that neat?Let me tell you about the 6th grade section first. It starts off reviewing simple paragraph structure - having a topic sentence, some detail sentences, and a concluding sentence. Then it moves into different types of paragraphs like descriptive, narrative, persuasive, and expository. There are lots of examples and exercises to practice writing each kind of paragraph.My favorite part was the narrative paragraph section because I love telling stories! The book gave tips on describing characters, setting the scene, figuring out the plot, and usingdialogue. It had a super funny example about a dog getting loose from its yard that cracked me up. After reading that chapter, I wrote my own narrative paragraph about the time I got a goldfish for my birthday. It was way more interesting than just saying "I got a goldfish"!For 7th grade, the book goes into writing full 5-paragraph essays. It explains how the intro paragraph states your main idea, the 3 body paragraphs are your supporting details, and the conclusion wraps it all up. The examples here were great for showing how each paragraph should flow into the next one. There was one sample essay comparing and contrasting cats and dogs that used really descriptive language. My essay was about my favorite summer vacation - I made sure to include an intro, 3 body paragraphs about the beach, hiking, and seeing my cousins, and a conclusion restating how it was the best vacation ever!The 8th grade chapters get into more advanced essays like argument essays, research papers, and literary analysis. I'm not quite at that level yet, but I peeked ahead and it looked both challenging and super useful for preparing for high school level writing. The argument essay section taught techniques like using credible sources, anticipating counterarguments, and strong word choice to make your point convincing. The examplescomparing arguing for/against school uniform policies helped illustrate all those tips. Cool stuff!Finally, 9th grade covered impressive sounding essays like cause/effect, process analysis, definition, and critique/evaluation essays. While a lot of those went over my head for now, I can definitely see how having practice with those formats will be invaluable for high school and college. The sample definition essay defining "success" using personal anecdotes, expert quotes, and compound/complex sentences was reallywell-written. Hopefully in a few years my essays can be that sophisticated!Overall, I'm so grateful my teacher introduced our class to this "Middle School English Composition E-Book 2023 by Grade Level Unit." Even though I'm only in 5th grade now, being able to reference the higher grade level examples has been priceless for improving my English writing skills year by year. If your school doesn't use this e-book yet, you gotta tell your English teachers to get it for next year - it's a total game changer! Thanks for reading my loooong essay about this awesome e-book resource. Happy writing, dudes!篇5Wanwei Middle School English Exam Essay E-book 2023 by Grade and UnitHello friends! My name is Li Ming and I am a sixth grade student at Wanwei Elementary School. Today I want to tell you all about the awesome new English exam essay e-book our school made for middle schoolers to get ready for their big tests. It is super cool and high-tech!First, let me tell you about the Grade 6 section. That's the one I've looked at the most since I'll be in middle school next year. The essays in that part cover all the units we learned this year like "My Family and Pets", "Sports and Hobbies", and "Popular Foods". The example essays have funny pictures and are written in a way that is not too hard but also not too babyish. They use some idioms and advanced vocabulary to get us ready for middle school level writing. My favorite essay is the one about dumplings because it reminds me of the time I helped my grandma make dumplings and they came out looking like tiny ugly gremlins instead of like the perfect crescents in the picture. Writing is not that easy!The Grade 7 section looks super interesting too. The units have titles like "A Memorable Vacation" and "My Favorite Book or Movie". Those are really relatable topics that we can all writelots of details about. I noticed the example essays in this grade get a little longer and use more complex sentences. There are also helpful tips about using transition words and organizing your ideas into clear paragraphs. That will be great practice for when the writing prompts start getting harder.Even though I'm not there yet, I peeked ahead at the Grade 8 part of the e-book too. Wow, the essays in this level are basically like little mini research papers! The units have academic titles such as "An Important Invention" and "A Shocking Scientific Discovery". The writing samples use lots of technical terms and cited facts from reliable sources. There are also sections explaining how to incorporate quotes, avoid plagiarism, and structure different essay formats like persuasive or expository pieces. I can tell the Grade 8 units are getting us ready for serious writing in high school and beyond. It looks hard but super valuable!One of the coolest things about this e-book is all the interactive features. You don't just read the example essays, you can click to watch videos where students discuss the prompts and brainstorm ideas first. There are also practice activities where you can rearrange scrambled paragraphs or fill in missing transition words. The best part is the used feedback featurewhere you can submit your own practice essays and get comments from teachers about what you did well and how to improve.Overall, my school's new Wanwei Middle School English Exam Essay E-book 2023 seems like an awesome resource. Having real student writing examples for each unit, from simple paragraphs in Grade 6 to complex research pieces in Grade 8, will be so helpful for all of us to learn the right skills at the right level. The multimedia tools and personalized feedback options make it really interactive and engaging too. I'm feeling prepared and confident thanks to this e-book. Middle school exam essays, here I come!篇6Middle School English Essays - The Fun Way!Hey friends! It's me again, your pal who loves to learn English. I'm super excited to tell you about this really cool book I got called the "Eduwinner Middle School English Essay E-Book 2023." It's awesome!What's so great about it? Well, let me break it down for you.First off, it's split up into different grade levels, which is really handy. So if you're in 6th grade, there's a whole section just for you with essay topics perfect for kids your age. Same thing for 7th grade, 8th grade, and so on. Pretty neat, right?But here's where it gets even better. Within each grade level, the book is divided again into units! So let's say you're learning about adjectives and adverbs in your English class. You can just flip to that unit and find essay prompts all about describing things using adjectives and adverbs. Too cool!The prompts themselves are so much fun too. One I really liked was "Describe your favorite fictional hero and why you admire them." How awesome would it be to write about Spider-Man or Wonder Woman? And the prompts get your creative juices flowing in a totally natural way as you write in English.Another prompt that looked great was "If you could invent one new rule for your school, what would it be and why?" Oooh, I can't wait to propose that school days should only be 2 hours long! A kid can dream, right?What else makes this e-book so fantastic? Well, since it's electronic, you can have it on your tablet or computer wherever you go. No lugging around a massive textbook! You can writedirectly in the document too with a stylus or keyboard. Talk about high-tech learning!But arguably the best part is all the awesome examples the e-book gives you. For pretty much every prompt, there are sample essays written by other students. You can see how they structured their ideas, what vocabulary they used, and how they expressed themselves in English. It's like having a built-in tutor!I may be just an elementary kid, but I can already tell this "Eduwinner" e-book is going to be super valuable when I get to middle school. Mastering those English essays is going to be a piece of cake with all the amazing prompts, examples, and easy organization.Maybe I'll even get so good that I can publish my own book of English essays one day. A kid can dream, right? But for now, I'm just stoked to crack open the "Eduwinner Middle School English Essay E-Book 2023" and get started. English essays, here I come!。
中南财经政法大学学位英语考试真题
中南财经政法大学学位英语考试真题全文共3篇示例，供读者参考篇1Central South University of Finance and LawEnglish Proficiency ExamQuestion: Write a persuasive essay on the following topic:"Social media has had significant negative impacts on society and should be more strictly regulated by governments. Social media companies have failed to protect user privacy, enable the spread of misinformation, and negatively impact mental health - especially among young people. Governments need to step in with new laws and regulations to rein in social media's harms."You should aim to write a multi-paragraph persuasive essay of around 2000 words in response to this statement. Be sure to acknowledge counterarguments but ultimately take a clear stance supporting or opposing the proposal put forth.Sample Student Essay:Social media has undoubtedly transformed the world in which we live over the past couple of decades. Platforms like Facebook, Twitter, Instagram and TikTok have connected billions and revolutionized how we communicate, access information, and spend our leisure time. However, I strongly agree that social media's negative impacts on society now outweigh its benefits and that new government regulations are desperately needed.Let's start with privacy - an issue that should concern every social media user. Despite their terms and policies, social media companies have proven themselves to be utterly untrustworthy when it comes to protecting our personal data. Time and again, major breaches and leaks have exposed user data to hackers, advertisers, and who knows who else. Our locations, messages, photos, browsing habits and more have been exploited for profit with minimal consent. Is it any wonder that changes like Europe's GDPR laws have garnered so much public support? I for one don't trust these companies to voluntarily implement sufficient privacy safeguards.Arguably even more disturbing is social media's role in spreading misinformation, hate speech and conspiracy theories on a massive scale. A few national governments have managed to counter anti-vax misinformation during the pandemic, but thisis just the tip of the iceberg. False information continues to rapidly proliferate on these platforms - whether it's related to elections, violence, discriminatory ideologies or pseudoscience. The algorithms designed to maximize engagement paradoxically reward outrageous, emotionally-charged falsehoods over facts. Simply put, social media has become a disinformation dystopia where fringe beliefs and tribalism reign. We cannot have a shared reality or rational discourse when everyone exists in their own filter bubble.As if that weren't bad enough, we're also now seeing major mental health impacts - particularly among young and teenage users. The constant pursuit of validation through likes and shares, addictive endless scrolling, relentless comparisons to perfected selfies and influencer lifestyles - it's no wonder rates of anxiety, depression, and even suicide have spiked since social media's meteoric rise. Do we really want our youth's formative years and self-esteem being shaped by these psychologically manipulative apps? I have friends who have deleted Instagram and Snapchat for their own wellbeing. Even former employees at these companies now admit to unease over the mental health consequences of social media. This level of harm demands intervention.Some may argue that government regulation could infringe on free speech and expression. I absolutely believe in those core democratic rights and values. However, we already have limitations and rules around yelling "fire" in a crowded theater, incitements to violence, defamation laws and so on. We must find reasonable ways to extend those principles to the social media age. Others may claim that social media is simply reflecting human nature - craving attention, tribalism, and outrage have existed long before Facebook. That may be partially true. But these platforms are also specifically engineered to exploit those impulses through endless newsfeeds, autoplay videos, and algorithms optimizing for engagement over truth and healthy discourse.So yes, while I admit there are complexities and valid concerns around excessive regulation, the status quo has become intolerable. We need governments to step up with common sense rules around user privacy, content moderation, and protecting the mental health of young people. Social media cannot be a total "Wild West" of privacy invasions, viral falsehoods, and psychological manipulation - especially not when it comes to kids. Tech companies have demonstrated they won't properly self-regulate.Perhaps we could implement data privacy laws with harsh penalties and required consent over use of personal information. Independent fact-checking oversight of viral posts could combat misinformation while still protecting free speech. Age restrictions, mental health disclosure requirements and ethical caps on attention-grabbing algorithms could help shield young minds from harm. Substantial fines or even temporary shutdowns could incentivize compliance.Whatever precise policy mix is enacted, one thing is clear - something must be done about social media's unchecked abuses. Core individual rights like privacy, access to truth, and mental wellbeing are being eroded on a generational scale for profit. The technology shaping our society and youth requires democratic, ethical oversight. We can't afford to be passive consumers about this any longer. Our humanity depends on reasonably governing these powerful platforms before it's too late.篇2The Postgraduate Entrance Exam: My Experience with the English SectionAs a fresh graduate eager to further my education, the postgraduate entrance exam loomed large on my horizon. Among the various sections, the English test was undoubtedly one of the most daunting challenges. With its reputation for being notoriously difficult, I knew I had to prepare diligently to stand a chance of securing a coveted spot in Zhongnan University of Economics and Law's prestigious graduate program.The weeks leading up to the exam were a whirlwind of intense study sessions, practice tests, and a constant battle against the nagging fear of underperformance. I pored over vocabulary lists, grammar rules, and past exam papers, determined to leave no stone unturned in my quest for mastery.Finally, the day of reckoning arrived, and I found myself seated in a vast examination hall, surrounded by hundreds of fellow test-takers, each of us united in our shared goal yet fiercely competitive. The air was thick with anticipation and apprehension.The English section kicked off with a reading comprehension passage that seemed deceptively straightforward at first glance. However, as I delved deeper into the intricacies of the text, I quickly realized that the questions were designed to test notonly our understanding of the material but also our ability to draw nuanced inferences and critically analyze the author's arguments.Next came the dreaded cloze test, a ruthless exercise that forced us to navigate the treacherous waters of vocabulary and grammar simultaneously. I found myself agonizing over each blank, meticulously weighing the subtle shades of meaning conveyed by different word choices. It was a mental gymnastics routine that left me utterly drained by the end.The writing section presented its own unique set of challenges. We were tasked with crafting a well-structured and logically sound essay on a thought-provoking prompt. As I scratched away furiously with my pen, trying to juggle coherent arguments and elegant phrasing, I couldn't help but feel a pang of envy for those who possessed an innate flair for the written word.But the true test of my English prowess came in the form of the listening comprehension section. The audio recordings, delivered in a dizzying array of accents and speech patterns, seemed to conspire against my auditory faculties. I found myself straining to catch every word, desperately scribbling notes as thespeakers rattled on, their voices fading in and out like a radio station with poor reception.As the exam drew to a close, I couldn't help but feel a mixture of relief and trepidation. Relief that the ordeal was finally over, but trepidation at the thought of how I had fared. Had my efforts been enough? Had I adequately demonstrated my command of the English language?In the end, the postgraduate entrance exam's English section proved to be a formidable foe, but one that I faced head-on with determination and resilience. It was a baptism by fire, a trial that tested not only my linguistic skills but also my mental fortitude and ability to perform under pressure.Looking back, I can't help but feel a sense of pride in having tackled such a daunting challenge. The experience has instilled in me a newfound respect for the complexities of the English language and a renewed appreciation for the dedication required to truly master it.As I anxiously await the results, I can take solace in the knowledge that, regardless of the outcome, I have emerged from this experience a stronger, more resilient individual, better equipped to face the academic and professional challenges that lie ahead.篇3The Trials and Tribulations of the Zhongnan University English Proficiency ExamAs students at Zhongnan University of Economics and Law, we all know that the English proficiency exam is a rite of passage. It's a test that strikes fear into the hearts of even the most diligent scholars. I still have nightmares about the time I took it last semester.I remember walking into the exam hall, clutching my pencils and feeling like I was marching to my doom. The room was deathly silent, except for the sound of nervous foot-tapping and pages turning. I took a deep breath and opened the exam booklet, bracing myself for the onslaught of questions.The first section was listening comprehension, which is always a doozy. They played these bizarre recordings of people with the strangest accents imaginable, talking about topics that ranged from quantum physics to artisanal cheese-making. I'm pretty sure one of the passages was in Klingon. I scribbled down my answers, praying that I hadn't just written "the quick brown fox jumps over the lazy dog" over and over again.Next up was the reading section, which is usually my strongest suit. But on that fateful day, the passages seemed to be written in some sort of indecipherable code. I struggled through dense paragraphs about international trade agreements and the mating habits of the Australian platypus. By the time I reached the end, my brain felt like it had been put through a blender.The writing section was equally brutal. The prompt asked us to argue whether or not pineapple belongs on pizza, which is a debate that has raged for centuries. I spent a good twenty minutes just staring at the page, trying to come up with a coherent thesis statement that didn't involve phrases like "unholy abomination" or "culinary sacrilege."But the true test of endurance was the speaking section. We had to record ourselves answering questions about our daily routines, our future plans, and our opinions on the geopolitical implications of the Skywalker saga. I'm pretty sure I just mumbled incoherently for most of it, occasionally throwing in words like "contingency" and "paradigm shift" to sound intelligent.By the time the exam was over, I felt like I had been through a war. I stumbled out of the hall, dazed and disoriented,wondering if I had just experienced some sort of elaborate hazing ritual.In the end, I passed the exam by the skin of my teeth. But the experience left me with a newfound respect for the English language and a burning desire to never again set foot in that cursed exam hall.To my fellow students who are gearing up to take the proficiency exam, I wish you the best of luck. Study hard, get plenty of rest, and remember: even if you bomb the test, at least you'll have a funny story to tell your grandchildren someday.And to the sadistic souls who create these exams, I have just one thing to say: You're monsters. Absolute monsters.。
2024年上海中考英语徐汇区一模作文
2024年上海中考英语徐汇区一模作文全文共3篇示例，供读者参考篇12024 Shanghai Junior High School Entrance Examination English First Model Test EssayWriting is the best way for teenagers to express their thoughts and feelings. As an important part of the Shanghai Junior High School Entrance Examination, the English composition test is designed to measure students' abilities to convey ideas clearly and logically. In the following essay, I will discuss the topic of "The Future of Technology" from my perspective.In today's digital age, technology plays an increasingly important role in our daily lives. From smartphones to social media, from artificial intelligence to virtual reality, technology has revolutionized the way we communicate, work, and live. As a teenager growing up in this tech-savvy world, I am both excited and apprehensive about the future of technology.On the one hand, I believe that technology has the potential to bring about tremendous benefits to our society. For example,the development of advanced medical devices and treatments can improve healthcare and save lives. In addition, the use of renewable energy sources and sustainable technologies can help protect the environment and combat climate change. Furthermore, the Internet and social media platforms have allowed us to connect with people from all over the world and share knowledge and experiences.However, I am also aware of the potential dangers and challenges posed by the rapid advancement of technology. For instance, the proliferation of artificial intelligence and automation could lead to job losses and economic inequality. Moreover, the overreliance on technology may erode our critical thinking skills and interpersonal relationships. In addition, the misuse of technology, such as cyberbullying and online fraud, can have serious consequences for individuals and society as a whole.In conclusion, the future of technology is both exciting and uncertain. As teenagers, we must learn to harness the power of technology for the greater good while also being mindful of its risks and limitations. By staying informed, critical, and ethical in our use of technology, we can help create a brighter and more sustainable future for ourselves and future generations.Overall, writing this essay has helped me reflect on my views on technology and its impact on society. I look forward to further exploring this topic and developing my writing skills in the future. Thank you for reading.篇22024上海中考英语徐汇区一模作文The Importance of Environmental ProtectionIn recent years, environmental issues have become increasingly prominent, posing a great threat to our planet and our lives. As students, we have a responsibility to protect the environment and promote sustainable development. In this essay, I will discuss the importance of environmental protection and offer some suggestions on how we can contribute to a cleaner and greener world.First and foremost, environmental protection is crucial for the survival of all living beings on Earth. The destruction of forests, pollution of rivers and oceans, and the extinction of species all contribute to the deterioration of our natural environment. If we do not take action now to address these issues, we may face irreversible damage to our planet.Secondly, environmental protection is essential for human health. Air pollution, water contamination, and toxic waste disposal can all have serious consequences for our health, leading to respiratory illnesses, cancer, and other health problems. By taking steps to protect the environment, we can improve the quality of the air we breathe, the water we drink, and the food we eat.There are several ways in which we can contribute to environmental protection. Firstly, we can reduce, reuse, and recycle. By using less plastic, paper, and other disposable items, we can reduce the amount of waste that ends up in landfills and oceans. We can also support eco-friendly products and businesses that prioritize sustainability and environmental responsibility.Secondly, we can conserve energy and water. Turning off lights, computers, and other electronic devices when not in use, taking shorter showers, and fixing leaky faucets can all help us reduce our energy and water consumption. Additionally, we can use public transportation, carpool, or ride a bike instead of driving a car to reduce our carbon footprint.Furthermore, we can participate in environmental clean-up events and campaigns. By volunteering to clean up parks,beaches, and rivers, we can help remove litter and pollution from our environment. We can also raise awareness about environmental issues and advocate for policies and regulations that protect the environment.In conclusion, environmental protection is a collective responsibility that requires the participation of individuals, communities, and governments. As students, we can make a difference by adopting eco-friendly habits, supporting sustainable practices, and advocating for a cleaner and greener world. By taking action now to protect the environment, we can ensure a brighter future for generations to come. Let us all do our part to preserve our planet for the well-being of all living beings.篇3The 2024 Shanghai Xuhui District Model English Exam Written CompositionIn the 2024 Shanghai Xuhui District Model English Exam, students were given a variety of topics to choose from for their written compositions. One popular topic was about the importance of environmental protection in our daily lives. Here is a sample essay written by a student during the exam:Title: The Urgency of Environmental ProtectionIn today's world, the issue of environmental protection is becoming increasingly urgent. As human activities continue to harm the earth's ecosystems, it is essential for us to take action to preserve our environment for future generations.One of the main reasons why environmental protection is so important is to combat climate change. The burning of fossil fuels and deforestation have led to an increase in greenhouse gas emissions, resulting in global warming and extreme weather events. By reducing our carbon footprint and switching to renewable energy sources, we can slow down the pace of climate change and protect our planet.Another key reason for environmental protection is to preserve biodiversity. The loss of habitats due to deforestation and urbanization is causing a decline in species diversity, leading to imbalances in ecosystems. By protecting natural habitats and promoting sustainable land use practices, we can help maintain a healthy environment for all living organisms.Furthermore, environmental protection is crucial for our own health and well-being. Pollution from industrial activities and domestic waste has led to air and water pollution, resulting in respiratory diseases and waterborne illnesses. By reducingpollution and protecting our natural resources, we can create a cleaner and healthier environment for ourselves and future generations.In conclusion, environmental protection is a pressing issue that requires immediate attention. By taking action to reduce our impact on the environment, we can ensure a sustainable future for all living beings on earth. It is up to us to make a difference and protect our planet for generations to come.This essay highlights the importance of environmental protection and the need for action to address environmental challenges. Students who wrote on this topic during the exam demonstrated their awareness of global environmental issues and their commitment to making a positive impact on the world.。
NVE Corporation ALT025 Analog TMR Sensors商品说明书
Analog TMR SensorsALT025 Analog TMR SensorsEquivalent CircuitIdealized Transfer FunctionsFeatures • Tunneling Magnetoresistive (TMR) technology • Large signals (20 mV/V/mT typ.) • ±10 mT (±100 Oe) linear range• High linearity output (<1 %F.S. ±5 mT)• Ultra-low temperature coefficient of output (±0.1 %/°C) • Up to 300 kHz frequency bandwidth• 20 k Ω typ. device resistance for low power • Operation to near-zero voltage• Up to 125 °C operating temperature • Tiny TDFN6 packageApplications • Motion, speed, and position control • Non-contact current sensing • Mechatronics and roboticsDescription The ALT025 is a Tunneling Magnetoresistance (TMR) analog bridge sensor with an extraordinary amount of signal and linear range.The differential bridge output is bipolar, meaning it is positive for a positive field and negative for an opposite field polarity.The Wheatstone bridge configuration allows the sensors to be pure ratiometric devices. They will operate properly at extremely low supply voltages, and the output signal will be proportional to the supply voltage.The bridge signals are stable over a temperature range of −40 to 125 °C.The sensor is available in a tiny TDFN6 package in tape and reel format.OUT+OUT -V- (GND)ALT-Series Magnetometer Transfer FunctionOutputFieldAbsolute Maximum RatingsParameter Symbol Min. Typical Max. Units Supply voltage V CC7 Volts Operating temperature T min, T max−40 125 °C Storage temperature −65 150 °C ESD (Human Body Model)12000 Volts Applied magnetic field2H Unlimited T Voltage from sensor connections to center pad 63 Volts DCOperating SpecificationsParameter Symbol Min. Typical Max. Units Operating temperature T −40 125 °C Supply voltage V cc0 5.5Volts Offset voltage V offset−20 20 mV/V Device resistance R 8 20 30 kΩFrequency bandwidth3 f DC 300 kHz Operating field range2H −10 10 mT Saturation field2H sat30 mT Sensitivity28 20 mV/V/mT Hysteresis H c1% F.S. Linearity4±2mT, −40 –85°C±5mT, −40 – 85°C ±2mT, −40 – 125°C ±5mT, −40 – 125°C Lin0.10.20.20.50.20.40.51% F.S.Output at maximum field V max300 mV/V Temperature coefficient of device resistance5TCR −0.08 % / °C Temperature coefficient of output5TCO −0.1 0 0.1 % / °C Off-axis characteristic6Cos2(β)Package Parameters Symbol Min. Typical Max. Units Junction–ambient thermal resistance7θJA320 °C/W Power dissipation P D500 mW Notes:1.Human Body Model (HBM) per JESD22-A1142. 1 millitesla (mT) = 10 Gauss (G) = 10 Oersted (Oe) in air3.Specified for amplitude reduction of −3 dB.4.Maximum deviation from best linear fit. Excludes contributions from hysteresis.5.TCR is the device resistance change with temperature in constant applied field. TCO is the output change with temperature using either a constant current orconstant voltage source to power the sensor.6.Beta (β) is any angle from the sensitive axis.7.Measured per JESD51 with ground pad not connected to circuit board.Typical Performance GraphsFigures 1 shows the response of the ALT025.Figure 1. ALT025 performance for temperatures ranging from −40 to 125 °C.Cross-Axis Axis Directional SensitivityThe ALT025 has cross-axis sensitivity to magnetic fields corresponding to the pad 1 to pad 6 direction on the TDFN6 package. This configuration is useful in current sensor applications. Current carrying circuit board traces oriented beneath the partperpendicular to the sensitive direction will produce magnetic fields in the cross-axis direction for the ALT025 shown in Figure 2.Figure 2. Cross-axis-sensitivity for ALT025 sensors.BipolarALT-Series sensors are bipolar. The sensor output changes sign with the magnetic field direction. This is ideal in applications like current sensing and proximity sensing where AC waveforms are expected or the signal changes sign. The diagram in Figure 3 shows the output polarity of the sensor referenced to the magnetic field direction. When the magnetic fields are oriented in the direction from pad 1 to pad 6 the sensor output (V out+−V out-) is positive. The magnetic field generated by the configuration in (a) produces the sensor output shown by the dot in (b).Figure 3. The bipolar response of ALT025 sensors.Unlike Hall Effect or other sensors, the direction of sensitivity of the ALT025 TMR sensor is in the plane of the package, which is more convenient for many applications. Two alternatives to the permanent magnet orientation shown in Figure 3 are shown in Figure 4.Figure 4. Planar magnetic sensitivity.Illustrative ApplicationsDual-Supply Differential AmplifierThe ALT025’s bipolar output is ideal for applications requiring positive and negative output voltages. The circuit below has a gain of five. A low-cost, low bias current op amp allows large resistors to avoid loading the sensor bridge. The 1 M Ω input resistors are 100 times the 10 K Ω sensor output impedance to avoid loading.Figure 5. Dual-supply differential amplifier.Single-Ended Instrumentation AmplifierTMR sensors have high output signals, but if amplification or a single-ended output is required, a circuit like the one below can be used. A gain of 2.5 amplifies the sensor’s typical maximum output of ±160 mV/V to 80% of rail-to-rail (one volt/volt), providing more usable signal without risk of saturating the amplifier for a sensor at the high end of the output signal range. A voltage divider provides a 2.5 V reference voltage to center the amplifier output with zero field.Figure 6. Single-ended analog sensor instrumentation amplifier.OUT - )5V 5 VSimple Direct Microcontroller InterfacesWith their large output signals, ALT025 sensors can often interface directly to microcontrollers, even the 10-bit ADCs built into inexpensive microcontrollers such as an Atmel AVR®. Such microcontrollers are common in Arduino and other sensor interface boards. The ALT025’s 20 kΩ typical device resistance provides 10 kΩ output impedances, ideal for direct interface to many microcontrollers:Figure 7. Typical direct microcontroller interface.LED Field-Strength IndicatorThe ALT025’s true bipolar output allows detection of field polarity. The op-amp circuit in the figure below can be used to detect the polarity of the magnetic field, and change brightness to indicate field strength at a glance:Figure 8. LED brightness indicates the magnetic field and color indicates polarity.In this circuit, a positive field turns on the red LED, and a negative field turns on the yellow LED. The 250 KΩ potentiometer is optional to correct for sensor offset.Noncontact Current SensingWith low hysteresis, high linearity at low fields, and high speed, the ALT025is ideal for noncontact current measurement. Due to its convenient in-plane sensitivity, it can be mounted directly over PCB traces. The sensor measures the current by detecting the magnetic field generated by the current through the trace.The ALT025 features cross-axis sensitivity, so it is able to detect current traces directly beneath the part for maximum accuracy. These sensors have a wide linear range, so they are solutions for a wide variety of current requirements. By tailoring the PCB trace to the application, the ALT025 can detect currents from 0.1 mA to 250 A.Two typical high-resolution current sensing configurations are shown below. The current trace runs directly under the ALT025 on a single side of the PCB.Figure 9a. 0.05" (1.3 mm) trace forcurrents 0 – 5 A.Figure 9b. Five turns of 0.0055"(0.14 mm) trace for currents 0 – 1 A.For these configurations, the generated magnetic field is easy to calculate with Ampere’s Law:H = 5nI [“H” in oersteds and “I” in amps. “n” is the number of turns.]H =∙[“H” in oersteds, “I” in amps, “d” in millimeters, and “w” in millimeters.]To simplify these calculations, we have a free, Web-based application with these formulas to calculate magnetic fields and sensor outputs in this application:/spec/calculators.php#tabs-Current-SensingTo help with the design of high current traces for current sensing applications, see our application note, which provides a comprehensive guide./Downloads/SB-00-083_Precision_High_Current_Sensing_Over_PCB_Traces.pdfRoHSCOMPLIANTTDFN6 Package (-10 suffix)Notes:• Dimensions in millimeters.• Soldering profile per JEDEC J-STD-020C, MSL 1.ALT025-10E Pinout and Functional Diagram:ALT025-10E Pinout Pin Symbol Description1 V out+ Positive bridge output (increases with field).2 NC No internal connection.3 GND Negative bridge supply or ground.4 V out- Negative bridge output (decreases with field).5 NC No internal connection.6 V cc Positive bridge supply.Center PadInternally connected to leadframeOUT+364OUT -Vcc 1GNDPart NumberingALT02Base PartALT = Analog TMR MagnetometerSensors02 = Cross-Axis 5 = 10 mT Linear Range 10 = TDFN6E = RoHSBare Circuit Boards for SensorsNVE offers bare circuit boards specially designed for easy connections to surface-mount sensors. Popular PCBs are shown below (images are actual size):AG035-06:1.57" x 0.25" (40mm x 6 mm) TDFN6Revision HistorySB-00-102 – Rev. B June 2019Change•Corrected offset specificationSB-00-102 – Rev. A June 2019 Change•Clarified connections on application circuits •Increased typical sensitivity consistent with test dataSB-00-102 – Prelim June 2019 Change •Preliminary ReleaseDatasheet LimitationsThe information and data provided in datasheets shall define the specification of the product as agreed between NVE and its customer, unless NVE and customer have explicitly agreed otherwise in writing. All specifications are based on NVE test protocols. In no event however, shall an agreement be valid in which the NVE product is deemed to offer functions and qualities beyond those described in the datasheet.Limited Warranty and LiabilityInformation in this document is believed to be accurate and reliable. However, NVE does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information.In no event shall NVE be liable for any indirect, incidental, punitive, special or consequential damages (including, without limitation, lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory.Right to Make ChangesNVE reserves the right to make changes to information published in this document including, without limitation, specifications and product descriptions at any time and without notice. This document supersedes and replaces all information supplied prior to its publication.Use in Life-Critical or Safety-Critical ApplicationsUnless NVE and a customer explicitly agree otherwise in writing, NVE products are not designed, authorized or warranted to be suitable for use in life support, life-critical or safety-critical devices or equipment. NVE accepts no liability for inclusion or use of NVE products in such applications and such inclusion or use is at the customer’s own risk. Should the customer use NVE products for such application whether authorized by NVE or not, the customer shall indemnify and hold NVE harmless against all claims and damages.ApplicationsApplications described in this datasheet are illustrative only. NVE makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification.Customers are responsible for the design and operation of their applications and products using NVE products, and NVE accepts no liability for any assistance with applications or customer product design. It is customer’s sole responsibility to determine whether the NVE product is suitable and fit for the customer’s applications and products planned, as well as for the planned application and use of customer’s third party customers. Customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products.NVE does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer’s applications or products, or the application or use by customer’s third party customers. The customer is responsible for all necessary testing for the customer’s applications and products using NVE products in order to avoid a default of the applications and the products or of the application or use by customer’s third party customers. NVE accepts no liability in this respect.Limiting ValuesStress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) will cause permanent damage to the device. Limiting values are stress ratings only and operation of the device at these or any other conditions above those given in the recommended operating conditions of the datasheet is not warranted. Constant or repeated exposure to limiting values will permanently and irreversibly affect the quality and reliability of the device.Terms and Conditions of SaleIn case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. NVE hereby expressly objects to applying the customer’s general terms and conditions with regard to the purchase of NVE products by customer.No Offer to Sell or LicenseNothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights.Export ControlThis document as well as the items described herein may be subject to export control regulations. Export might require a prior authorization from national authorities.Automotive Qualified ProductsUnless the datasheet expressly states that a specific NVE product is automotive qualified, the product is not suitable for automotive use. It is neither qualified nor tested in accordance with automotive testing or application requirements. NVE accepts no liability for inclusion or use of non-automotive qualified products in automotive equipment or applications.In the event that customer uses the product for design-in and use in automotive applications to automotive specifications and standards, customer (a) shall use the product without NVE’s warranty of the product for such automotive applications, use and specifications, and (b) whenever customer uses the product for automotive applications beyond NVE’s specifications such use shall be solely at customer’s own risk, and (c) customer fully indemnifies NVE for any liability, damages or failed product claims resulting from customer design and use of the product for automotive applications beyond NVE’s standard warranty and NVE’s product specifications.An ISO 9001 Certified CompanyNVE Corporation11409 Valley View RoadEden Prairie, MN 55344-3617 USATelephone: (952) 829-9217/NveCorporatione-mail: *******************©NVE CorporationAll rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. SB-00-102 June 2019。
八年级上册英语科学与素质试卷条码
八年级上册英语科学与素质试卷条码全文共6篇示例，供读者参考篇1Science and Quality Test Paper Barcodes for 8th Grade First Semester EnglishHey guys! Did you know that our English test papers actually have barcodes on them? I'm sure most of you have noticed those weird black and white stripy things on the corner of the test papers we get. Well, those are called barcodes and they are really cool science things that help the teachers a lot!Barcodes are like a secret code that computers and machines can read. They look just like a bunch of thick and thin black lines to us humans. But scanners and computers can actually decode the bars and spaces into numbers and letters. Isn't that crazy?Each one of those barcodes is unique, kind of like our fingerprints. That means no two barcodes are exactly alike. The barcode on your test paper is just for your paper. The bars and their thicknesses and the spaces in between them represent aspecial code. When the teacher scans your barcode, the computer can tell exactly which test paper it is.This barcode system helps teachers in so many ways when it comes to grading tests and keeping track of our scores. Let me break it down for you:Accurate GradingCan you imagine how hard it would be for teachers to keep all our test papers organized and graded properly without mixing anything up? With the barcode system, there's no confusion! When the teacher scans a barcode, the computer pulls up that exact student's test instantly. The teacher can grade it and input the score right into the records, perfectly matched to the right student. No more mixing up Billy's test with Bobby's!Instant Data EntryInstead of teachers having to write down each student's scores by hand into a grade book or spreadsheet, the barcode system allows them to just scan and enter grades way faster. The barcode identifies the student and links directly to their records. Boom - score entered with just a couple clicks!Detailed AnalysisThe barcode data can analyze tons of useful information for the teachers too. Like which questions most students got wrong, what the highest and lowest scores were, ow different classes performed overall, and more. Teachers can use this big data to see where students struggled and which areas need more lessons.Prevent CheatingEach barcode is unique to that one test paper, remember? That means the barcode system can detect if two students have identical test forms. If students tried to copy each other's answers, the barcodes would flag there are two scans of the same test. Pretty sneaky cheating prevention, huh?Check for Missing TestsLet's say there are 25 students in the class but the teacher only has 23 test papers collected and scanned at the end. The barcode system would be able to identify which two student barcodes are missing from the batch so the teacher knows who didn't turn in their test. No more lost tests getting missed!So as you can see, those barcodes play a huge role in making sure our tests are graded accurately and efficiently. Teachers canuse the barcode data to get a ton of helpful insights too. And the codes help prevent cheating and mixing up our scores.Does it make sense why the barcodes are there now? I think the science and technology behind it is really fascinating. Those simple black and white stripes pack a punch when it comes to data and analytics for our English tests.Next time you get a test, take a close look at your own unique barcode. Appreciate how that tiny thing is a workhorse helping teachers do their jobs and make sure you get the grade you earned. Maybe you can even try making up your own barcode patterns and see if you can stump the scanner! Just kidding...or am I?So there you have it - the scoop on those mysterious barcodes from an 8th grade perspective. The point is, what seems like a basic barcode actually involves some pretty fascinating science, data, and quality control in the classroom. Who knew, right? Now you can enlighten all your friends about the secret life of barcodes on your English tests!篇2Barcodes on Tests? What's That All About?You know that feeling when the teacher hands out a test and you get those nervous butterflies in your stomach? Well, lately there's been something new adding to that test anxiety for us 8th graders - barcodes! Yeah, you read that right, barcodes like they use at the grocery store are suddenly showing up on our English tests.At first, I thought it was some kind of weird prank. Like, why would there be a barcode on my science test? Is Mrs. Robinson going to scan my test at checkout and tell me my total is 7.99? But after seeing them on a few tests, I realized this barcode thing must be for real. And I wasn't the only one confused either - it seemed like the whole class was whispering about the mysterious barcodes once we got the tests.So I decided to do some investigating and get to the bottom of this barcode business. I figured my big sister Clara would know what's up since she's in high school. When I asked her about it, she just laughed. "Don't you know anything? Those are QR codes, not barcodes. Duh!"Um, okay then. My first question was answered with another question. What's a QR code? Clara explained that QR stands for "quick response" and it's a type of barcode that stores lots ofdata and can be read by cameras. Apparently they've been around for years, but who knew they'd end up on our tests?Clara said the QR codes are there so the tests can be scanned and scored by a computer instead of having teachers grade them by hand. She figured the school district must be using some new software to automatically grade the English tests. I'd heard about that kind of thing happening, but I didn't realize we'd be getting computer-graded tests so soon.I had even more questions after talking to Clara. Like, how does a computer actually "read" and grade an English test? And why did they add the QR codes to tests all of a sudden this year? So I went to ask my English teacher Mrs. Robinson for all the deets.Mrs. Robinson was really excited to explain the whole QR code thing to me. She said our school district had been working on transitioning to computer-scored tests for a couple years, but there were some challenges to get it all set up. Apparently one of the biggest issues was figuring out a way to scan in test booklets accurately.In the past, she said, the school tried using machine-scoring for standardized tests where you filled in little bubbles on an answer sheet. But that was a total pain because you had to use aNo. 2 pencil, fill in the bubbles perfectly, and make sure the answer sheets didn't get wrinkled or smudged at all. Not very practical for tests with written responses like our English tests.That's where the QR codes come in! Mrs. Robinson said the district got new scanning technology specifically designed for test booklets. Every page of the booklet has a unique QR code on it, kind of like a smart tracking code. The scanners can quickly read all the QR codes and know exactly which test booklet it is, what question is on each page, and whose answers they're capturing.Once the tests are scanned in, the new software can use artificial intelligence to actually read and grade the written responses! Mrs. Robinson said the AI is trained on tons of sample tests that were graded by human teachers. So in theory, it learns how to grade just like a teacher would.I'll admit, that part about AI grading our writing kind of freaked me out at first. How can a computer really judge something like that? What if it gets things wrong? Mrs. Robinson assured me the software keeps getting more accurate, but teachers still review the grades to double check.She also said having the AI do the first-round grading saves teachers a bunch of time. Instead of spending hours puttinggrades in the gradebook, they can focus on leaving feedback to help students improve. I guess I can't argue with that!Another cool thing about the QR codes is they make it way easier to transfer tests between teachers and make sure everything stays organized. No more struggling to read smudged kid handwriting or dealing with missing page 7s. It's all digitally tracked through the QR code system.While the QR codes seemed really high-tech at first, I could see how they actually simplify a lot of things once you understand what they're for. And hey, if they help cut down on some of the grading busy work for teachers, I'm all for it. Anything that frees up time for learning is A-OK in my book.篇3科学与素质大家好！我是小明，今天我要和大家分享一些有关科学与素质的知识。
2024年全国大学生英语竞赛c样题作文
2024年全国大学生英语竞赛c样题作文全文共10篇示例，供读者参考篇1Hi guys! Today I wanna talk about the topic of "2024 National College Students English Competition".So like, this year's competition was super exciting! There were tons of smart and talented students from all over the country showing off their English skills. It was like watching a language Olympics!The competition had a bunch of different events, like a spelling bee, a grammar challenge, and a speaking contest. It was so cool to see how good some of these students were at English. I was totally impressed!I think competitions like this are so important because they give us a chance to test our skills and see how we measure up against other students. It's a great way to push ourselves to do better and improve our English abilities.I hope that next year's competition will be even bigger and better, with even more students participating. It's such a fun wayto show off our English skills and make new friends from all over the country.So yeah, that's my take on the "2024 National College Students English Competition". I can't wait to see what next year's competition will be like! Let's all keep practicing our English and maybe we'll be up on that stage someday too! Go team English!篇2Hey guys, today I want to tell you about the 2024 National College English Competition C-sample essay! It was super fun and challenging but I did my best!The topic of the essay was "The Impact of Technology on Education". I talked about how technology has changed the way we learn, like using computers and tablets instead of just books. It's so cool how we can do research online and even take classes from home!I also mentioned how technology can make learning more fun, like using apps and games to practice English. But I also talked about the importance of balance, because too much screen time can be bad for our eyes and health.I shared some examples of how technology has helped me with my studies, like using educational websites and watching videos to learn new words. I think it's awesome how we can use tech to study anytime, anywhere!In conclusion, I believe that technology has both positive and negative effects on education. It's up to us to use it wisely and make the most of it. I'm so proud of myself for writing such a long essay, and I can't wait to see how I did in the competition! Thanks for listening, bye!篇3Hey guys, do you know about the National English Competition for College Students in 2024? It's like a super fun event where students from all over the country come together to show off their English skills. I want to share with you my experience of participating in the competition this year.First of all, the competition was held in a big city with tall buildings and busy streets. There were so many students from different universities, all excited and nervous at the same time. We had to wear our best outfits and look sharp for the competition.There were three rounds in the competition: a written test, a speaking test, and a group discussion. The written test was a bit tricky because we had to answer questions about grammar, vocabulary, and reading comprehension. I was a bit nervous at first, but I did my best and managed to finish the test on time.Next was the speaking test, where we had to talk about a given topic for two minutes. I chose to talk about my favorite hobby, which is playing the guitar. I practiced a lot before the competition, so I was confident and relaxed during my speech.The last round was the group discussion, where we had to discuss a topic with our team members. Our topic was about the importance of learning English in today's world. We all had different opinions, but we managed to come up with a great discussion and present our ideas to the judges.In the end, the judges announced the winners, and I was so surprised to hear my name called out as one of the top performers. I couldn't believe it, and I was so happy and proud of myself. It was such an amazing experience to be part of the National English Competition for College Students, and I can't wait to participate again next year.So, if you love English and want to challenge yourself, make sure to join the competition next year. It's a great opportunity tomeet new friends, improve your English skills, and have a lot of fun. Who knows? You might even win a prize like I did!篇4Hi everyone! Today I want to tell you about the 2024 National English Competition. It was so much fun, let me tell you all about it!First, we had to study really hard to prepare for the competition. We had to learn all about grammar, vocabulary, and reading skills. It was tough, but our teachers helped us a lot. We practiced every day to make sure we were ready to show off our English skills.On the day of the competition, we were all so excited and nervous. We went to the competition hall and saw so many other students from different schools. It was a little intimidating, but we knew we had studied hard and we were ready.The competition had different sections like spelling, grammar, reading comprehension, and even speaking. We had to answer questions, complete sentences, and even give a short speech. It was a lot of work, but it was also really fun.After the competition was over, we all waited anxiously for the results. Finally, they announced the winners and I was so happy to hear my name called out. I won a prize for my performance in the speaking section!Overall, the 2024 National English Competition was a great experience. I learned a lot, met new friends, and had a lot of fun. I can't wait to do it again next year!篇5Title: My Dream SchoolHey guys! Do you know what my dream school looks like? Well, let me tell you all about it!First of all, in my dream school, there are no boring classes. All the teachers are super fun and creative, and they make learning English so interesting and exciting. We never have to memorize long lists of vocabulary or grammar rules. Instead, we play games, sing songs, and watch cool videos to practice our English skills. And the best part is, we get to go on field trips to English-speaking countries so we can practice speaking with real native speakers!Secondly, my dream school has the most amazing facilities. We have a huge library filled with books in English, and astate-of-the-art language lab where we can practice our listening and speaking skills. There's also a beautiful garden where we can have outdoor classes and enjoy the fresh air while learning English. And of course, we have a cool cafeteria where we can eat delicious food from different English-speaking countries.But the most important thing about my dream school is the sense of community. Everyone is so friendly and supportive, and we all help each other to improve our English skills. We have English clubs where we can practice speaking with our classmates, and we organize English competitions and events to showcase our talents. And the teachers are always there to encourage us and push us to reach our full potential.In conclusion, my dream school is a place where learning English is fun, engaging, and inspiring. It's a place where students can grow and develop their language skills, while also making lifelong friends and memories. I can't wait for the day when my dream school becomes a reality!That's all for now, see you later!篇6"Hey peeps! Today I'm gonna talk about the 2024 National College English Competition. So, like, imagine this - you're in this super cool competition with all these brainy college students from all over the country. It's like a battle of words and grammar, and it's gonna be epic.First off, you gotta be prepared. Like, study those vocab words and grammar rules like your life depends on it. And don't forget about the speaking and writing parts too. You gotta be able to express yourself in all sorts of ways.Then comes the day of the competition. You walk into the room and see all these fancy judges staring at you. Don't panic! Just take a deep breath and do your best. Remember, you're awesome and you totally got this.During the competition, listen carefully to the questions and read the prompts carefully. Don't rush, take your time and think before you speak or write. And don't forget to use those fancy idioms and expressions to spice up your answers.And finally, have fun! The competition is not just about winning, it's about enjoying the process and learning from it. So, give it your all and show everyone how amazing you are.In conclusion, the 2024 National College English Competition is gonna be lit. So, study hard, stay calm, and rock that competition. You got this, fam!"篇7Hello everyone, I'm so excited to tell you about my experience in the 2024 National English Competition!The competition was so much fun! There were students from all over the country and we all had to show off our English skills. We had to do different things like reading, writing, listening, and speaking.For the reading part, we had to read a passage and answer questions about it. It was a bit hard because some of the words were tricky, but I tried my best. The writing part was my favorite because we got to write a story about our dreams for the future. I wrote about how I want to travel the world and learn about different cultures.In the listening part, we had to listen to a recording and answer questions about it. Some parts were really fast, so I had to concentrate really hard. And for the speaking part, we had to talk about a topic with a partner. We talked about our favorite hobbies and why we like them.Overall, the competition was a great experience and I learned a lot. I can't wait to see how I did and I hope I did well! I had so much fun and I'm excited to keep practicing my English skills. Thank you for reading about my adventure at the 2024 National English Competition!篇8Title: My Experience in the 2024 National College English CompetitionHi everyone! I'm so excited to share with you my experience in the 2024 National College English Competition. It was such an amazing journey and I learned so much along the way.First of all, let me tell you about how I prepared for the competition. I spent hours studying grammar, vocabulary, and reading comprehension. I also practiced speaking and writing essays every day. It was hard work, but I knew it would all pay off in the end.When the day of the competition finally arrived, I was nervous but also super pumped. The competition had different sections like listening, speaking, reading, and writing. Each section was challenging in its own way, but I did my best and tried to stay calm.I was especially nervous during the speaking section, but I took a deep breath and just went for it. I talked about my hobbies, my family, and why I love learning English. It was a bit nerve-wracking, but I managed to get through it without stumbling too much.The reading and writing sections were tough too, but I remembered all the practice I had done and managed to answer the questions and write the essays. I even cracked a few jokes in my writing, which I think the judges appreciated.In the end, I was so happy to hear that I had won a prize in the competition. It was such a great feeling to know that all my hard work had paid off. I couldn't have done it without the support of my teachers, friends, and family.I learned a lot from this experience, not just about English, but also about perseverance, determination, and believing in myself. I can't wait to see where this journey takes me next!Thank you for listening to my story. I hope it inspires you to never give up on your dreams and always work hard for what you want. Good luck to all future competitors!篇9Title: My Experience in the National College English CompetitionHey guys, I'm so excited to share with you all about my experience in the National College English Competition in 2024! It was such an amazing and nerve-wracking experience, but I had so much fun and learned a lot along the way.The competition was held in a big conference center in the city, and there were hundreds of students from all over the country participating. I felt a little intimidated at first, but once the competition started, I just focused on doing my best.There were different rounds in the competition, like a written test, a speaking test, and a group discussion. The written test was challenging, with multiple-choice questions, grammar exercises, and an essay section. I had been practicing my writing skills a lot, so I felt pretty confident about that part.The speaking test was a bit nerve-wracking because I had to answer questions on the spot and talk about different topics. But I tried to stay calm and just speak from the heart. The group discussion was really fun because I got to work with other students and share ideas on a given topic. It was so cool to hear different perspectives and learn from each other.After all the rounds were over, there was a closing ceremony where they announced the winners. I didn't win a top prize, but I was so proud of myself for making it through the competition and giving it my all. I also made some new friends and got to connect with other students who share my love for English.Overall, the competition was a challenging but rewarding experience, and I can't wait to participate again next year. It was a great opportunity to test my English skills, meet new people, and push myself out of my comfort zone. I'm so grateful for the experience and all the memories I made along the way. Thanks for listening to my story, and I hope to see you all at the competition next year!篇10Title: My Experience in the 2024 National College English CompetitionHi everyone, I’m so excited to share with you all about my experience in the 2024 National College English Competition! It was such a fun and challenging event, and I learned a lot from it.First of all, the competition was held in a big city, and there were so many talented students from all over the country. I was a little nervous at first, but once I started talking to the othercontestants, I felt more relaxed and confident. We all shared our love for English and encouraged each other to do our best.The competition consisted of several rounds, including listening, speaking, reading, and writing. The listening round was a bit tough for me because the recordings were quite fast, but I managed to answer most of the questions correctly. The speaking round was my favorite because I got to share my thoughts and opinions on various topics with the judges. I talked about my favorite book, my dream job, and even gave a little speech about the importance of learning English.The reading and writing rounds were also challenging, but I had prepared well in advance, so I felt more prepared. I read a passage about climate change and wrote an essay on the topic. It was great to be able to express my ideas and show off my English skills.In the end, after all the rounds were over, the results were announced, and I was so surprised to hear my name called out as one of the top winners! I was awarded a trophy and a certificate, and I felt so proud of myself for doing my best.Overall, the 2024 National College English Competition was an amazing experience, and I would definitely recommend it to anyone who loves English and wants to challenge themselves. Ican’t wait to participate again next year and continue to improve my English skills. Thank you for listening to my story!。
华大智造 MegaBOLT 生物信息分析加速器快速上手指南说明书
创新智造引领生命科技快速上手指南Quick Start Guide M G I T e c h C o ., L t d .仅供科研使用深圳华大智造科技有限公司Main Building and Second floor of No.11 Building, Beishan Industrial Zone, Yantian District, Shenzhen, 518083, Guangdong, China 中国深圳市盐田区北山工业区综合楼及11栋2楼网址/Website:***********************邮箱/E-mail:地址/Address:Research Use Only关于本指南本指南适用于MegaBOLT生信分析加速器，指南版本1.0，软件版本V2.1.0。
本指南及其包含的信息为深圳华大智造科技有限公司（以下简称深圳华大智造）的专有保密信息，未经深圳华大智造的书面许可，任何个人或组织不得全部或部分地对本指南进行重印、复制、修改、传播或公布给他人。
本指南的读者为终端用户，其作为设备的一部分，由深圳华大智造授权终端用户予以使用。
严禁未授权的个人使用本指南。
深圳华大智造对本指南不做任何种类的保证，包括（但不限于）用于特定目的的商业性和合理性的隐含保证。
深圳华大智造已经采取措施，确保本指南的准确性。
但是，深圳华大智造对错误或遗漏不承担责任，并保留任何对本指南和设备进行改进以提高其可靠性、功能或设计的权利。
本指南中的所有图片均为示意图，图片内容可能与实物有细微差异，请以购买的设备为准。
©2019 深圳华大智造科技有限公司版权所有。
发布日期：2019年11月8日制造商信息版本记录About this guideThis guide is applicable to MegaBOLT Bioinformatics Analysis Accelerator.The edition is 1.0 and the software version is V2.1.0.This guide and the information contained within are proprietary to MGI TechCo., Ltd. (hereinafter called MGI), and are intended solely for the contractualuse of its customer in connection with the use of the product described hereinand for no other purpose. Any person or organization can not entirely orpartially reprint, copy, revise, distribute or disclose to others the guide withoutthe prior written consent of MGI. Any unauthorized person should not use thisguide.MGI does not make any promise of this guide, including (but not limited to)any commercial of special purpose and any reasonable implied guarantee.MGI has taken measures to guarantee the correctness of this guide. However,MGI is not responsible for any mistakes or missing parts in the guide, andreserves the right to revise the guide and the software, so as to improve thereliability, performance or design.Figures in this guide are all illustrations. The contents might be slightlydifferent from the software, please refer to the software purchased.©2019 MGI Tech Co., Ltd. All rights reserved.Release date: November 8, 2019Manufacturer informationRevision history目录1快速开始 (1)硬件安装 (1)进入操作系统 (1)进入命令行终端 (2)查看帮助文档 (3)投递任务 (3)1使用ZLIMS (5)1MegaBOLT文档导航 (6)文档简介 (6)获取文档 (7)C o n t e n t s Contents1Quick start (9)Assembling the device �������������������������������������������������������������������������9Logging into the system ����������������������������������������������������������������������9Starting the terminal ���������������������������������������������������������������������������10Viewing Help ����������������������������������������������������������������������������������������11Submitting a task ��������������������������������������������������������������������������������11 1Working with ZLIMS ....................................................13 1MegaBOLT documents (14)Brief introduction ��������������������������������������������������������������������������������14Accessing the documents �����������������������������������������������������������������15快速开始1 快速开始硬件安装连接主机、显示器、键盘与鼠标，将加密锁插入任意USB 接口，接通电源，即可开机。
四级英语作文真题202312月
四级英语作文真题202312月全文共3篇示例，供读者参考篇1Unfortunately, I do not have access to specific writing prompts or essay questions from the December 2023 administration of the CET4 exam. This is due to the fact that the future test questions have not been released or made public at this time.However, I can provide some general tips and strategies for preparing for the writing section of the CET4 exam.1. Practice writing essays on a variety of topics: To prepare for the writing section of the CET4 exam, it is important to practice writing essays on different topics. This will help you become familiar with the format of the exam and will also improve your writing skills.2. Focus on organization and structure: When writing your essay, make sure to have a clear introduction, body paragraphs, and a conclusion. This will help you organize your thoughts and ideas in a logical and coherent manner.3. Use advanced vocabulary and grammar: To score well on the writing section of the CET4 exam, it is important to use a variety of vocabulary and grammar structures. Try to incorporate advanced vocabulary words and complex sentence structures in your writing.4. Proofread your essay: Before submitting your essay, make sure to proofread it for any spelling or grammar errors. This will help you ensure that your essay is well-written and free of mistakes.5. Practice time management: During the exam, make sure to manage your time effectively. Allocate enough time to plan, write, and revise your essay so that you can complete it within the time limit.Overall, the key to success on the writing section of the CET4 exam is to practice regularly, focus on organization and structure, use advanced vocabulary and grammar, proofread your essay, and practice time management. By following these tips and strategies, you will be well-prepared to excel on the writing section of the CET4 exam.篇2Unfortunately, as an AI language model, I do not have access to real past exam questions or content. However, I can generate a sample essay based on a simulated 2023 December CET-4 question. Here is an example essay for practice:2023 December CET-4 Writing Question:Topic: The Impact of Technology on SocietyOutline:1. Introduction2. Positive impacts of technology3. Negative impacts of technology4. ConclusionSample Essay:Technology has revolutionized the way we live, work, and communicate in today's modern society. While technological advancements have brought many benefits, they have also created challenges that need to be addressed. In this essay, we will explore the impact of technology on society.Firstly, technology has greatly improved our lives in numerous ways. The advent of the internet has made it easier forpeople to access information and connect with others around the world. Social media platforms have enabled individuals to stay in touch with friends and family, creating a more interconnected global community. Additionally, advancements in healthcare technology have led to improved medical treatments and increased life expectancy.On the other hand, technology has also resulted in negative consequences for society. The widespread use of smartphones and social media has led to issues such as addiction, mental health problems, and decreased face-to-face interaction. Privacy concerns have also been raised due to the collection and misuse of personal data by tech companies. Furthermore, the rise of automation and artificial intelligence has raised fears about job displacement and economic inequality.In conclusion, technology has had a profound impact on society, both positive and negative. It is essential for individuals, governments, and businesses to consider the ethical implications of technological advancements and to work together to create a more sustainable and inclusive future. By harnessing the benefits of technology while addressing its drawbacks, we can build a more harmonious and equitable society for all.(Word count: 243 words)I hope this sample essay helps you to prepare for the 2023 December CET-4 exam. Good luck!篇3I'm sorry, but I am not able to provide verbatim texts from the 2023 December CET-4 exam as it is protected by copyright law. However, I can provide you with a sample essay that closely resembles the format and style of the CET-4 exam prompt. Let me know if you would like me to provide you with such an essay.。
外研版八年级英语下册全册练习题
Module 10 On the radioWritten test part (共95分)Ⅰ. 单项选择(共15分，每小题1分)从各题后所给的四个选项中选择可以填入空白处的最佳答案。
() 1. —When did your interest ________ basketball begin?—When I was 8 years old.A. toB.forC. atD. in() 2.Many people like Na Ying's songs because she has a pleasant ________.A. answerB. shapeC. voiceD. trip() 3. —What's the ________ of the meeting?—To talk about the travel plan.A. ideaB. resultC. purposeD. way() 4.My uncle works at a TV station. He often ________ with famous people.A. takes messagesB. does interviewsC. makes a choiceD. has a journey() 5.When you walk along the river, you must be careful to avoid ________ into it.A. fallB. to fallC. fallingD. fell() 6.Thank you for ________ me the beautiful flowers.A. sendB.sendingC. sentD. to send() 7.I need ________ my homework before I watch TV every day.A. to finishingB. finishedC. finishingD. to finish() 8.I don't know why Jack ________ playing football. He plays it every afternoon.A. dislikesB. likesC. likedD. disliked() 9. —What should I do to keep ________?—You should keep ________ exercise.A. health; to doB. health; doingC. healthy; to doD. healthy; doing() 10. ________ that they can't answer the question.A. It seemsB. It seemedC. They seemD. They seemed() 11. My grandfather often sits near the window, ________ the radio.A. listenB. listeningC. listen toD. listening to() 12. —Do you know ________ Mike arrived here?—Of course he did.A. whetherB. whenC. whyD. how() 13. —Could you tell me when ________?—Next Monday.A. will John leaveB. John will leaveC. did John leaveD. John left() 14. I don't know ________ he will come to our party this Sunday. ________ he comes, I'll tell you.A. if; WhetherB. whether; ThatC. that; IfD. whether; If() 15. —Our basketball team lost the match yesterday.—________A. Here you are.B. What a pity!C. That's great news!D. Here it is.Ⅱ. 完形填空(共10分，每小题1分)先通读下面的短文，掌握其大意，然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案。
HP Quick Test Pro和Empirix Hammer的集成方法说明书
Brett LeonardIndianapolis Workshop on Software Testing Integrating HP Quick T est Proand EmpirixHammerVersion:1.00Publication Date:September 26, 2008Prepared by:Brett LeonardAbout this Report and PresenterAbout this report This report was presented at the Indianapolis Workshop on Software Testing on September 26, 2008. The title of the workshop was “Testers who write code”.About the presenter Brett Leonard is the author and presenter of this report. He is a Senior QA Manager at a major financial company in the United States. He has over 17 years of experience in the financial services industry and 9 years of experience in software testing. He has a Bachelor of Science degree in Business Economics from State University of NY at Oneonta and has studied Software Engineering at the University of Cincinnati College of Applied Sciences. He currently leads a team that creates automated testing solutions for a variety of technologies such as web, mainframe, client server, database, web services, and voice response systems. His email address is*******************.Project Background and Testing ChallengeProject background A company is engaged in a multi-year, multi-million dollar effort to upgrade their call center software application. The telephony functionality that sends a callers account information, authentication status, and other details to a phone representative (from the Voice Response System) is an integral component to the new software.Testing challenge from Senior Management Originally, automation of telephony was considered out of scope; however, the Senior Vice President of Technology Risk Management expressed concern due to the number of regression test cases requiring the functionality and challenged the QA Automation team to find a solution.Two possible responses to the challenge ∙Yes, there is always a way to technologically solve a problem and there isa solution to this one. The critical question is whether the cost ofimplementing the solution exceeds the benefits derived. That question can be answered by further research and proof of concepts.∙No, it is dangerous to suggest innovative approaches to Senior Management because you can pay a political price if you don‟t find a solution.Lesson One – Take the Dive** Lesson 1 ** Take the dive!! Take the risk and suggest new, creative, and potentially effective solutions (even to Senior Managers) but cover yourself politically bysuggesting further research, proof of concept, and a cost/benefit analysis maybe necessary before committing to a solution.A quote to keep in mind Anything the human mind can conceive, and believe, it can achieve –Napoleon HillTechnology corollary 1 Technology solutions are restricted by the triple constraints of time, money, and scope.Technology corollary 2 Some technology solutions may not be the best to solve the problem. There is a great risk of over engineering solutions – sometimes a simple solution is the best one.Lesson Two – Be Prepared and Use Effective Effort** Lesson 2 ** Know your requirements and constraints, conduct your own automationresearch and development, form a vision using your knowledge, and intuition.Use effective effort to break through barriers. Don‟t listen to nay-sayers ifyou believe you are right, even supposed experts.Our requirements ∙Telephony was to be invoked by Quick Test Pro.∙Process needed to be integrated with Quality Center.∙ A number of interactions needed to be covered (authenticated, unauthenticated, wrong personal identification number, wrong customer ID, etc…Our constraints ∙No budget to buy additional software.∙Initial implementation to be done within a month.∙Needed to be implemented with existing resources.∙Development team was simultaneously working on a solution.My vision (Before investigation) ∙Use Quick Test Pro to invoke a command line utility to kick off Call Master script on Hammer server.∙Call Master script simulates interaction with user.∙Quick Test Pro waits for user interface to indicate that call was received. ∙Quick Test Pro proceeds with test on desktop and reports results to Quality Center.What is Effective Effort? Components of Effective Effort∙Tenacious engagement – Working hard. Working through difficulties.Not giving up.∙Intense focus on data and feedback – Paying close attention to information that indicates how well you are doing, thinking about what it will take to get better, what you must work on to improve.∙Ongoing strategy formulation based on feedback – Listening to what the feedback is telling you and changing your approach accordingly by trying new ways to improve.Continued on next pageLesson Two – Be Prepared and Use Effective Effort, Continued Examples ofEffective EffortLesson Three – Find Support for your Cause** Lesson 3 ** Vendor product support representatives can be great allies but don‟t waste their time.How to waste a support reps time ∙Don‟t read the manual before you call.∙Don‟t read other resources on the support web site.∙Don‟t read the support forums.∙Expect the rep to solve your problem for you.How a support rep can help ∙Confirm your vision.∙Become an interested party and give you specific strategies. ∙Assist troubleshooting issues during proof of concept phase. ∙Provide ad hoc trainingHow a support rep helped us ∙Confirmed that there should be a way for us to achieve our goal (although he had not heard of anyone doing it before).∙Confirmed that the software (command line utility) I identified through my initial research would do the job.∙Provided us with additional documentation.∙Helped us put together an initial command line string for our proof of concept.∙Gave me ad hoc training on the functioning of the Hammer server software.∙Gave me a small piece of code to start building our interaction model with the voice response system.** Lesson 4 ** Proofs of concepts are essential to the development of new, creative, effective (innovative) solutions.Advantages of successful Proof of Concepts ∙People with doubts can be won over.∙People with little interest can become advocates and help implement the final product.∙Opens minds and allows the creative process to move forward.∙Uncovers risk involved in proposed solutions.∙Forces others to take your work seriously.Our proof of concept 1.Baby steps – Establish communication link to Hammer server. Usecommand line to invoke script that calls a cell phone.2.Integrate with QTP – Create a method through which the script in stepone can be invoked through Quick Test Pro.3.Interact with voice response system – Create a script on the Hammerserver that forces a call and account information to be sent to a phone representative.4.Put it together – Use QTP to invoke the script that sends a request tothe Hammer server to initiate the call interaction and watch the call and account information come through.** Lesson 5 ** Document your findings, create a process, and get others to help. Y ou can‟t do everything yourself. You need to socialize your solution throughout yourteam or anyone else that can help. Good documentation will give people theinformation they need to become familiar with your solution.Documents don’t need to be fancy. A good text readme document can be worth its weight in gold. Wikis are another good way to document new processes.The basic steps (for automation engineer) - Install HCMD application on desktop with QTP (TB_HCMD_3_0_1.exe) it will install tcl and ask you to reboot- Place batch (.bat file) in Temp directory (C:\TEMP)- Open QTP and run the CallPhone scriptTest processandarchitectureProcessdescriptionThe following chart describes the test process.Continued on next pageLesson Five – Documents Sell, ContinuedProcess description,(continued).Bat file HCMD Start Script -mc HammerServerName -h HammerServerName -c 3 -n C:\Hammer\libmgr\private\hammer\scripts\survey_params.sbl -i4#s#PhoneNumber#%1#s#TFN#%1#s#SSN#%1#s#RepExt#%1 -sa 0exitQTP code … Build command stringcmdStr = "cmd /K C:/TEMP/hcmd_params.bat 186******** 8771111111#"& " " & SSN & " " & "999"Set objShell = CreateObject ("WScript.Shell")objShell.Run cmdStr, 0, FalseSet objShell = NothingSample HVBcode (.sbl)Appendix IHCMD Start Script Command Information about scheduling a Hammer Visual Basic test script through the HCMD command line interface.Syntax HCMD Start Script -mc masterController -h server -c channels -n testName {-i nbrInputVars[#varType1#varName1#varValue1] ...[#varTypeN#varNameN#varValueN]}[-l loop] [-ld loopDelay] [-ma maxActive] [-st staggerType] [-svstaggerValue][-sm staggerMax] [-sa scheduleAction] [-t startTime] [-d startDate]Continued on next pageSyntax,(continued)Continued on next pageSyntax,(continued)Continued on next pageSyntax,(continued)Continued on next pageSyntax,(continued)Example The following command schedules an HVB test script on a Master Controller named Hammer. The test runs on channels 1 to 10 on the server Editt. Thetest file is in the C:\Tests folder and is named My_Test.sbl. The test takes twoinput variables: the integer called myInteger set to 3, and the string calledmyString set to helloWorld. The test is set to loop indefinitely with a loopdelay of 1500 ms. The start time for the test is 1:15 PM on January 10, 2007.If a channel is busy when the test starts, the test waits.HCMD Start Script -mc Hammer -h Editt -c 1-10 -n c:\Tests\My_Test.sbl-i 2#i#myInteger#3#s#myString#helloWorld -l -1 -ld 1500 -sa 0 -t 13:15 -d01/10/2007。
操作工保留程序Retenton program
OT Improvement（操作工提升）
Positive actions 积极行为
1) Operator retention program. （操作员保留程序） 2) Multi-skill level training for operators.（为操作工提供多技能 培训） 3) Use different type of bonus, like quality bonus, efficient bonus, output bonus and Kaizen bonus to encourage all employee. 利用不同类型的奖金激励员工，如品质奖、效率奖，超产奖与 经营改善奖 1) Use outsourcing and temp agency workers. （使用外部资源与临时员工） 1) Pay OT according to government labor law and all OT are voluntary. Employee will sign an “OT application from” with manager approval if they are requested to work OT. 按照劳动法给支付加班费，并且所有操作员工是是自愿的。对 于需要加班的操作员工，员工填写“加班申请表”由经理批准。 1)
Project mission 项目任务
To reduce turn over rate by 通过下面降低流失率 Q2 – 20% of Q1 TO Q3 – 25% of Q1 TO Q4 – 30% of Q1 TO After the plan implemented. 完成计划之后 To move up our DL skill to next level and stay longer with us.
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
University of LjubljanaFaculty of EconomicsMaster programme +2Research Methods and TechniquesLjubljana, January 28th, 2009Family name: __________________________________________________________________________Name: ________________________________________________________________________________ Enrollment number: ___________________________________________________________________________________________________________________________________________________________ This is an open book exam which lasts 120 minutes. For any information concerning the results announcement and related issues please consult the course webpage._______________________________________________________________________________________ POINTS - OVERVIEWMethodology (max 10 points)Statistics (max 10 points)TotalBonus – methodologyBonus - statisticsMETHODOLOGYPlease note: One or multiple answers can be correct. What you're looking for, however, is one correct combination of answers given under »Solution«.1.Which of the following approaches to knowledge is characterised by the fact that knowledge can beobtained by the strict adherence to the forms and rules of logic?a) Mystical mode.b) Authoritarian mode.c) Rationalistic mode.d) Logical mode.e) Religious mode.Solution:A. aB. bC. cD. dE. eF. none of the above2.Theories which are restricted to a particular setting, time, population or problem are called:a) Grand theories.b) Conceptual frameworks.c) Ad-hoc classificatory systems.d) Middle-range theories.e) Substantive theories.Solution:A. aB. bC. cD. dE. eF. none of the above3.Which of the following is a theoretical construct?a) Customer satisfaction.b) Service quality.c) Employee satisfaction.d) Emotional intelligence.Solution:A. aB. bC. cD. dE. all of the aboveF. none of the above4.“Treatment” is a term used in:a) surveys.b) experiments.c) interviews.d) processes of observation.Solution:A. aB. bC. cD. dE. none of the above5.Semantic differential is:a) An attitude property.b) A dimension of reliability.c) A measurement scale.d) An approach to evaluate validity.Solution:A. aB. bC. cD. dE. none of the above6.Which of the following are advantages of secondary data?a) Availability.b) High cost.c) Search speed.d) Ability to enhance primary data.e) Ability to replace primary data.f) Ability to reduce primary data.Solution:A. a+c+dB. a+c+eC. a+b+d+fD. a+b+e+fE. none of the proposed combinations of answers applies7.Which of the following statements is the correct definition of a double-barreled question?a) Question that raises several separate issues but only provides one set of responses.b) Question that raises several separate issues and provides several sets of responses.c) Question that may steer respondent towards a certain answer.d) Question that presents only one aspect of an issue for which respondent's reactions are being sought. Solution:A. aB. bC. cD. dE. none of the above8.Mystery shopping is:a) a survey method.b) an observation method.c) a method of primary data collection.d) a method of secondary data collection.e) an experiment.Solution:A. a+cB. b+cC. c+dD. eE. none of the proposed combinations of answers applies9.Auspices bias is a form of:a) self-selection bias.b) response bias.c) recall bias.d) extremity bias.e) interviewer cheating.Solution:A. aB. bC. cD. dE. eF. none of the above10.Which of the following classifies as a form of item nonresponse?a) Janez cannot be reached by phone.b) Janez refuses to participate in the survey.c) Janez can be reached by phone but has no time for the survey.d) Janez answers all questions in the survey.e) Janez answers all questions in the survey with the exception of the one dealing with level of income.f) Janez participates in the survey but leaves all socio-demographic questions unanswered.Solution:A. aB. b+cC. cD. dE. eF. e+fG. none of the proposed combinations of answers appliesMETHODOLOGY – A BONUS CASE STUDYRead the case study and answer the questions below!When Margaret Murphy O’Hara, a new field interviewer at Insight Research Corp., met her supervisor, Mary Zagorski, at the end of her first day, she was asked to describe her day in detail.She started by saying that the questionnaire was a bit too long. An elderly lady whom she interviewed had fallen asleep after about 20 minutes of interviewing.She also mentioned that a number of people had asked why they were selected. When somebody asked “Why did you pick me?” she did not know exactly what to say.She said that the nicest person she had interviewed was a man whose wife wasn’t home to be surveyed. He was very friendly and didn’t mind being asked about his income and age like some of the other people she had interviewed.She further said she had one problem that she needed some help with: four or five people refused to participate in the interview. One woman answered the door and said she was too busy because her son, a professional soldier, was leaving the country. The woman was throwing a little party for him before he went off to the airport. Margaret didn’t want to spoil their fun with the survey.Another lady said that she was too busy and really didn’t know anything about the subject anyway. However, she did suggest Bill Jerpe, her next-door neighbour, who was very interested in the subject. Margaret was able to talk to him and thus make up for the lost interview. It actually went quite well.Margaret said another woman wouldn’t want to participate because she didn’t know anything about the Insight Research Corp. and Margaret didn’t know quite what to tell her.Finally, she couldn’t make one interview because she couldn't find the address: 9615 South Francisco Rear.Questions:a)Which mistakes in survey research do you know? (5 points)b)Which mistakes in survey research can be identified in this particular case study? (5 points)c)If you were Mary, what would you tell Margaret about gaining access? (5 points)d)What recommendations to management should Mary prepare on the basis of the information receivedfrom Margaret? (5 points)STATISTICSA car manufacturer was given an offer from the tire manufacturer Bastyear for equipment of his cars. He claimed that his tires offered the same or best performance and offered a longer mileage than the tires of the current supplier, Michelout. To test the claim that Bestyear tires indeed offer a better mileage that Michelout tires, the car manufacturer selected a sample of 10 tires of each manufacturer and tested them. He got the following results (in km driven with a set of tires):Bestyear Michelout48269 4764950288 4786750726 4925948494 5045549241 4865247225 4518549914 4732751504 4982151056 5086147151 5065811.Which set of hypotheses describes what the car manufacturer wanted to test the best?a.H0:μBestyear=μMichelout;H1:μBestyear≠μMicheloutb.H0:μdifference=0;H1:μdifference>0c.H0:μBestyear=μMichelout;H1:μBestyear>μMicheloutd.H0:μMileage=50000;H1:μMileage≠50000e.The correct answer is not given.Afterwards the car manufacturer entered the data from the sample into SPSS and got the following results: T-TestGroup Statisticsproducer N Mean Std. Deviation Std. Error MeanBestyear 9 49511,001600,938533,646kilometersMichelout 9 48898,331861,967620,656Independent Samples TestLevene's Test for Equality of Variancest-test for Equality of Means95% Confidence Intervalof the DifferenceFSig.tdfSig. (2-tailed)Mean DifferenceStd. Error DifferenceLowerUpperEqual variancesassumed ,105 ,750 ,748 16,465 612,667818,530 -1122,5392347,873kilometers Equal variances not assumed,748 15,648,465 612,667818,530 -1125,7142351,04712. Which is the correct significance (P value) for the t-test values in the »Independent samples test« table?a. t =0,748;P t >0,748()=0,465b. t =0,748;P t >0,748)=0,465/2=0,233c. The correct answer is not given.13. What can you conclude based on the results of the t-test?a. H 0 is rejected; Bestyear tires have indeed higher mileage than Michelout tires.b. H 0 is not rejected. There is insufficient sample evidence to claim a higher mileage of Bestyear tires.c. H 0 is rejected; Bestyear tires have a different mileage than Michelout tires.d. H 0 is not rejected; Bestyear tires have a smaller mileage than Michelout tires.e. The correct answer is not given.The Ministry of Welfare wanted to estimate the consumption function of households in the country. For that purpose they collected data on yearly income and consumption of 20 households. They ran a regression and got the following results:Regression R SquareAdjusted R Square,906a. Predictors: (Constant), IncomeCoefficients aUnstandardized Coefficients Standardized CoefficientsModel B Std. Error Beta t Sig.(Constant) 7067,139 1302,552 5,426 ,0001Income ,576 ,044 ,952 ????? ,000a. Dependent Variable: Consumption14.Which of the following statements best describes the encircled statistic?a.Coefficient of correlation tells us that the connection between income and consumption is strongand positive.b.The regression coefficient tells us that if income increases by 1 euro, consumption increases by90,6 cents.c.The coefficient shows that consumption has a significant influence on income.d.The coefficient of determination tells us that 90.6 percent of the variation of consumption isexplained by the variation of income.e.The correct answer is not given.pute the missing statistic (in the table denoted by ??????) and select the appropriate conclusion forthe hypothesis it represents!a.0,58; H0 is not rejected; there is not sufficient evidence to claim that income has an influence onconsumption.b.14.5; H0 is rejected; income has a positive influence on consumption.c.0,04; H0 is not rejected; there is not sufficient evidence to claim that at least one independentvariable influences the dependent variabled.0,023; H0 is rejected; the independent variable has an effect on the dependent variablee.None on the combinations is correct.16.Finalize the analysis for the Ministry by answering what is the expected yearly consumption of a familywith 45 000 Euros yearly income?a.25931.5b.52067.1c.37932.9d.32998.7e.The correct answer is not given.17.What is NOT a reason for preferring logistic regression instead of discriminant analysis?a.Logistic regression can accommodate nominal variables as explanatory variablesb.For discriminant analysis much stricter assumptions have to be met.c.Logistic regression is much simpler to exand into more than two groups cased.Researchers may prefer logistic regression because it’s similar to multiple linear regressione.Gettig the group membership probabilities is simpler and more straight-forward in logisticregression.18.Assume that a logistic function was estimated using the maximum likelihood estimation. The likelihoodfunction value (-2LL) was compared to the -2LL of the based model. Chi-square test for the difference between the two -2LL values was significant at 0,01 and Nagelkerke pseudo R square was 0,256. Which of the following statements is true?a.The test was significant, so we reject the null hypothesis that the model is a good fit.b.With the model we are able to explain 25,6 percent of the variance of the dependent model.c.The test was significant, which means that adding the variables in the full model shows asignificant improvement in the model fit.d.Nagelkerke pseudo R square is computed as the ratio between two consecutive -2LL valuese.None of the above statements is true.19.What is NOT a difference between principal component and factor analysis?a.Factor analysis is normally performed on correlation matrix, whereas PCA on covariance matrix.b.The main aim of PCA is to explain as much variance as possible, aim of FA is to produce somewell defined dimensions.c.In FA we admit the existence of specific factors, in PCA we don’t.d.The directionality of relations goes from latent to observed in FA and from observed to latent inPCA.e.All of the above describe the differences between FA and PCA.20.Which of the following statements regarding cluster analysis is true?a.Non-hierarchical clustering is used to determine the optimal number of clusters.b.The heterogeneity of groups in a dendrogram decreases from left to right.ing Ward’s clustering is recommended when special small groups are expected.d.Standardization of variables should normally be used.e.None of the above statements is true.STATISTICS – BONUS QUESTIONSFactor analysis of the responses has been conducted on the set of nine statements regarding shopping habits, from att_1 (Shopping is fun) to att_9 (When I shop, I rather ask for advice than decide on my own).3 pt•On the basis of the SPSS output on the next page determine and explain the number of factors that need to be extracted! . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 pt •Explain the meaning of the extracted factors! . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 pt •What is the purpose of rotation in factor analysis? . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .We made a cluster analysis of the respondents based on seven out of nine responses on shopping behavior (Shopping is fun; I support national products, even if this costs me more in the long run; I shop where I can buy the cheapest; People should buy their national products and services; I like to shop; I often buy thingsjust because they are on sale; I prefer buying national products).1.On the basis of the following SPSS output define and explain the number of groups inclustering:* * H I E R A R C H I C A L C L U S T E R A N A L Y S I S * * Dendrogram using Ward MethodRescaled Distance Cluster CombineC A S E 0 5 10 15 20 25Label Num +---------+---------+---------+---------+---------+1530429242612814323825201721111921662791222571013185 pt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 pt Based on your decision about the number of clusters above, use the appropriate table belowto interpret the clusters! . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .。