机械制造技术2021秋季学习通课后章节答案期末考试题库2023年

机械制造技术2021秋季学习通课后章节答案期末考试题库2023年1.Welding distortion is caused by ( ).
参考答案:
rapid heating and cooling
2.Which kind of metals is commonly used in die casting?
参考答案:
Aluminium
3.Which process is UNSUITABLE to produce this bronze lion statue?
参考答案:
Welding
4.Which is the advantage of die casting? ( )
参考答案:
good surface quality
5.Manufacturing converts ( ) into products
参考答案:
materials
6.What is a sub-assembly?
参考答案:
部件
7.Investment casting is applied to produce ( )
参考答案:
all of the above
8.Which process is the most suitable to produce electric motor bodies?
参考答案:
Casting
9.Weld quality can be examined by ( ).
参考答案:
all of the above
10.Evaluating weld quality by break the workpiece to test its strength is known
as ( )
参考答案:
destructive testing
11.Rolling process is applied to produce ( )
参考答案:
all of the above
12.The welding defect of entrapping nonmetallic material in weld metal is know
n as ( ).
inclusion
13.In a rolling process, the metal is ( )
参考答案:
plastically deformed
14.Which welding process can ONLY be applied on sheet metals? ( ).
参考答案:
Resistance welding
15.What is the temperature in an electric arc welding?( )
参考答案:
5000-6000°C
16.Industry 3.0 realizes ( )
参考答案:
flexibilization
17.Which of the following is NOT fusion welding? ( )
参考答案:
Friction welding
18.AC welding machine can be used on ( ).
steel
19.DC welding machine can be used on ( ).
参考答案:
all of the above
20.在线学习占本课程总成绩比重约为（）
参考答案:
40-50%
21.Sand casting pattern design should provide for ( )
参考答案:
all of the above
22.( ) can be used in casting process
参考答案:
all of the above
23.Casting process can be applied on metals and ( )
参考答案:
plastics
24.Acetylene gas (C2H2) is ( ).
all of the above
25.Why do casting processes produce minimal waste?
参考答案:
Because excess metal can be used again.
26.Fusion welding joins two parts by ( ).
参考答案:
high temperature
27.In a typical riser-gated casting system, cavity ① depicts ( )
参考答案:
core
28.In a typical riser-gated casting system, cavity ② depicts ( )
参考答案:
riser
29.The welding process using flooding gas (e.g. Ar/He/CO2) to improve welding
quality is known as ( ).
参考答案:
gas metal arc welding
30.Polymers usually refer to ( )
参考答案:
plastics
31.The welding process using arc shielding by a cover of granular flux is known
as ( ).
参考答案:
submerged arc welding
32.Which statement is correct? ( )
参考答案:
Both hot rolling and cold rolling reduce grain size in metals.
33.Industry 4.0 is looking for ( )
参考答案:
customization
34.As a forging machine, gravity drop hammer can produce a force of ( )
参考答案:
20 tons
35.Upset forging is known as ( ).
参考答案:
heading
36.In soldering process, the melt point of filler metal is below ( ).
参考答案:
450℃
37.The chemical reaction is applied on ( ).
参考答案:
thermite welding
38.In brazing or soldering process, melting point of the filler metal is ( ) the m
etal to be joined.
参考答案:
lower than
39.Which process is the most suitable to volume produce the paper clips?
参考答案:
Presswork
40.Which product CANNOT be made by extrusion process?
参考答案:
Valve bodies
41.In a typical riser-gated casting system, cavity ③ depicts ( )
参考答案:
sprue
42.Which process is the most suitable to volume produce the bottle caps?
参考答案:
Presswork
43.Which process is the most suitable to volume produce angle plates?
参考答案:
Presswork
44.Which process is the most suitable to produce steel I-beams?
参考答案:
Rolling
45.Forging is economical for ( ).
参考答案:
large quantity production
46.As a forging machine, hydraulic press can produce a force of ( )
参考答案:
80000 tons
47.Which forging machine produces the largest press force? ( )
参考答案:
Hydraulic press
48.Forged parts have ( )
参考答案:
both of A and B
49.Which casting process can provide the products the highest mechanical prop
erties? ( )（哪种铸造方式获得的铸件机械性能最好？）
参考答案:
Squeeze casting
50.Boring processes are to make ( ).（镗削工艺用于加工什么？）
参考答案:
big accurate holes
51.Open-die forging is to make a blank to be ( ).
参考答案:
shorter and thicker
52.To remain a constant cutting speed turning, spindle speed should be ( ) as t
he workpiece diameter reduces.
参考答案:
increased
53.Which of the following is solid state welding? ( )
参考答案:
Cold welding
54.这门课的成绩由几项考核组成？
参考答案:
4项
55.该课程使用双语授课、英语考试的目的是：
参考答案:
以上均正确
56.Which of the following is NOT solid state welding? ( )
参考答案:
Resistance welding
57.这门课的主要内容是什么？
参考答案:
机械制造工艺与技术
58.Solid state welding does NOT require ( ).
参考答案:
electrodes
59.如果期末卷面考试只得了30分，意味着：
参考答案:
平时作业、综合设计、在线学习需要更努力的完成
60.Which welding process is suitable to join tubular parts in mass production? (
)
参考答案:
Friction welding
61.如果期末卷面考试得了90分，意味着：
参考答案:
得到了大约18分的总评成绩
62.关于上课缺席、迟到的理解，以下正确的是：
参考答案:
以上均正确
63.如果考试或书面作业被证明是抄袭的，惩罚是：
参考答案:
抄袭者和提供答案者均得零分
64. A four-jaw chuck is used to hold ( ).
参考答案:
an irregular shaped workpiece
65.Reaming processes are to make ( ).
参考答案:
accurate holes
66.Cutting speed of drilling is the linear speed at position ( ).
参考答案:
①
67.Polymers usually refer to ( )
参考答案:
plastics
68.Which of the following processes can make the best surface smoothness?
参考答案:
Honing
69.Sand casting pattern design should take ( ) into consideration.
参考答案:
all of the above
70. A CNC
milling machine that can use different tools to automatically perform a variet y of machining processes is called ( )
参考答案:
machining center
71.Grinding wheels are ( ) cutting tools.
参考答案:
abrsive
72.In a typical riser-gated casting system, component ① and ② depict ( )
参考答案:
side riser and top riser
73.Which process is the most suitable to produce this cast iron valve body?
参考答案:
Sand casting
74.Which process is the most suitable to produce this drain grill?
参考答案:
Sand casting
75.In a sand-casting mould, the‘core’is ( )
参考答案:
both of the above
76.Casting sands should have ( )
参考答案:
all of the above
77.Precise forging is known as ( ).
参考答案:
flashless forging
78.( ) is a defective surface of casting.（以下哪项属于铸件表面缺陷）
参考答案:
cold laps
79.Which metal does NOT shrink during casting process? ( )
参考答案:
gray iron
80.( ) is an incomplete casting.（以下哪项属于铸件不完整缺陷）
参考答案:
misrun
81.Defect of cavities in casting is caused by: ( )
参考答案:
metal shrinkage
82.Centrifugal casting is suitable to produce ( ).
参考答案:
hollow cylindrical parts
83.Which process is the most suitable to produce this brass door handle?
参考答案:
Casting
84.To remain a constant cutting speed turning, spindle speed should be ( ) at
larger workpiece diameter.
参考答案:
decreased
pare to finishing, roughing has ( ).
参考答案:
larger feed and larger cutting depth
86.What is “travel distance” in terms of machining? ( )
参考答案:
Distance of feed motion.
87.Cutting speed of drilling is the linear speed at position ( ).
参考答案:
①
88.Gear teeth can be produced by ( ).
参考答案:
all of the above
89.What does “tooling” mean?
参考答案:
Preparing tools
90.Grinding wheels are ( ) cutting tools.
参考答案:
abrsive
91. A CNC
machine tool can use different tools to perform turning, milling, and drilling c ontinuously is called ( )
参考答案:
turning center
92.( ) machine tools are widly applied in modern flexible manufacturing syste
m.
参考答案:
CNC
93.Which of the following processes can make the best surface smoothness?
参考答案:
Honing
94.Internal turning cutters are ( ) cutting tools.
参考答案:
single-point
95.Which machining process is the most suitable to produce this brass pipe elbo
w?
参考答案:
Turning
96. A collet chuck is used to hold ( ).
参考答案:
a bar stock
97.The process to enlarge diameter of an exsiting hole is known as ( ).
参考答案:
core drilling
98.( ) is the cutting tool used in honing.
参考答案:
Abrasive stone
99.To operate a lathe, you should NOT wear ( ).
参考答案:
gloves
100.Knurling process is to make a ( )
参考答案:
pattern
101.“Lathe dog” is used to ( ).
参考答案:
drive the workpiece
102.What kind of lathe fixture is used to hold a thin wall hollow workpiece? ( )
参考答案:
mandrel
103.What kind of lathe fixture is used to produce a long and slender workpiece? ( )
参考答案:
steady rest
104.Which of the following processes is NOT an abrasive machining process?
参考答案:
Tapping
105.Which machine tool is suitable to make a series of different holes?
参考答案:
CNC drilling center
106.A milling machine that can use different tools to automatically perform a vari ety of machining processes is called ( )
machining center
107.Machine tools are used to ( ).
参考答案:
all of the above
108.Grinding wheel dressing is to ( ).
参考答案:
recover cutting function
109.Reaming processes are to make ( ).
参考答案:
accurate holes
110.The core idea of just-in-time is ( ).
参考答案:
all of the above
111.The purpose of “5S system” is to ( ).
参考答案:
all of the above
112.Which machine tool is used to make holes in large workpieces?
radial drilling machine
113.Gun drilling processes are to make ( ).
参考答案:
deep holes
114.Tapping processes are to make ( ).
参考答案:
threads
115.“Jidoka” means ( ).
参考答案:
automatic stopping
116.The key way in the hole is producede by ( ).
参考答案:
slotting
117.Planing process is applied on ( )
参考答案:
rough surface flating
118.Which process is a kind of reciprocating machining?
Planing
119.Which process CANNOT be a reciprocating machining?
参考答案:
Reaming
120.Boring processes can be done on a ( ).
参考答案:
both of the above
121.This spline hole is prodecude by ( ).
参考答案:
broaching
122.Special purpose machine tools are designed to ( ).
参考答案:
produce a specific part in mass production
123.Cost of per product ( ) with the production lot size.
参考答案:
decreases
124.Metal cutting does NOT change ( ) of a workpiece.
material
125.Production line is applied on ( ).
参考答案:
mass manufacturing
126.“Jobbing” means producing products ( ).
参考答案:
in very small quantity
127.Lean manufacturing is looking for ( ).
参考答案:
minimum waste
128.Which fixture is NOT used in milling process?
参考答案:
Follower rest
129.What is the problem in the feature?
参考答案:
Unnecessary cutting required
130.Face milling is to make a ( ).
flat surface
131.On a CNC lathe, cutting tool is driven by ( ).
参考答案:
servomotors
132.What does “Takt time” mean? ( )
参考答案:
Time allowed to make each product
133.What is the problem in the feature?
参考答案:
Unbalanced cutting force
134.Which is a potential hazard when operate a machine tool?
参考答案:
all of the above
C machine tools are ( ), so they can make products exactly the same.
参考答案:
controlled by programs
136.Boring processes are to make ( ).
accurate holes
137.Electrical discharge machining CANNOT be used to cut ( ).
参考答案:
plastic
138.In a turning process, the dimension “x” is known as ( ).
参考答案:
cutting depth
139.Deburring process is to ( ).
参考答案:
remove sharp edges
140.Drill bits are ( ) cutting tools.
参考答案:
multi-point
141.The purpose of sand blasting is ( ).
参考答案:
cleaning
142.Cutting tools must be ( ).
all of the above
143.Jigs and fixtures CANNOT ( ).
参考答案:
extend cutting tool life
144.Wire EDM cuts metals by ( ).
参考答案:
high temperature
145.Electrical discharge machining can cut the workpiece ( ).
参考答案:
all of the above。