船舶英语练习试题1.doc

1. You may improve a vessel' s stability by A A.
keeping the fuel tanks topped off B.
increasing the free surface effect C.
keeping the fuel tanks at least half full D. keeping at least one fuel tank empty for slops
2. _B_of the controllable pitch propeller （变螺距螺旋桨）enables the blades （叶片）to be moved to change the pitch angle （螺距角）
A. An external mechanism
B. An internal mechanism
C. An interlock device
D. A hunting gear system
3. The abbreviation "GM ， is used to represent the_D_
A. height of the metacenter
B. fighting arm
C. righting moment
D. metacentric height （稳心高度）
4. The diesel engine is a type of _D _______ •
A. turbine engine
B. gas turbine
C. steam engine
D. internal combustion engine
5. Which of the following equipment is not fitted on the bridge? D
A. PPI
B. ARPA,自动雷达绘图仪 （EPA,电子绘图仪）
C. ECDIS
D. RUDDER POST （舵）
6. The net equipmen t in the automatic marine power plant con trol net work doesn ，t include _C ____
A. PLC
B. genera tor control and protection module such as PPU
C. reverse-power relay
D. instruments and regulators with microcomputer
7. Diesel engines instead of steam engines used as main-engine on board ships is mainly because_B ____
A. they have a high mechanical efficiency
B they have a high thermal efficiency
C. they are more reliable
D. they need less space
8. Current flowing in only one direction is called _C_•
A. alternating current
B. omnidirectional current
C. direct current
D. sinusoidal current
9. A manometer is used to measure ______ A_。

A. pressure
B. temperature
C. volume
D. specific gravity
value of the controlled condition. A. Designed value C. Measured value
11. When two different metals are joined to form a closed circuit and exposed to different temperatures at their junctions_A which can be used to measure temperature.
A. a current will flow
B. a power will develop
C. a heat will flow
D. a pressure will produce
B. Set value
D. Deviation 10is the actual
12.UMS stands for ____ D __ 。

A. ultra much space
B. universal medium system
C. unit machined space
D. unattended machinery space
40. A ship designed for carrying goods requiring refrigeration is called—A ___________
A. REEFER
B. RO/RO SHIP
C. CONTAINER
D. TANKER
13.The working principle of EPC-400 water content sensor is the _C ________ with water content change.
A. capacitance alternation
B. resistance alternation
C. temperature alternation
D. inductance alternation
14.A __ B—• is a group of records.
A. field
B. table
C. database
D. file
15.Internet Explorer, Firefox, Google Chrome, Safari, and Opera are the major _A—
A. web browsers
B. uniform resource locators
C. fire transfer protocols
D. java applets
16.The ship of 70,000 DWT（ DEAD WEIGHT TONNAGE,载重吨）the DWT here means_C_
A.its maximum discharging capacity
B.Its maximum weight
C.The maximum discharging capacity deducting ship" s own weight
D.The maximum cargo weight
17.which of the following conditions can lead to the failure of a resistor ABC
A.excessive vibration
B.insufficient ventilation （换气）
C.corrosion
ECDIS means ____ A_
A.Electronic Chart Display and Information System
B.Electric CD information Scheme
C.End Chart Digital Information Scheme
D.Engine Chart Display Information Standard
19.The heart of the diesel engine is the _B—where the fuel is burnt and the power developed.
A. crankcase
B. cylinder
C. scavenge box
D. pistons
20.With four-stroke engines, it takes four revolutions of the crankshaft （曲轴）to make _C— power stroke
A. 1
B.2
C.4
D.8
关联题：1
Over-speed Trip Device
The over-speed trip device is electronically controlled. Air at max. 30 bar is used as the operating medium. The engine speed monitoring system （ Spemos ） is capable of sensing two different over-speed situations.
The alarm function (at 110% speed, the normal speed of the engine is 600 r/min) will temporarily reduce the fuel racks to "no-fuel" position.
The stop function (at 115% speed) will cause a shutdown of the engine.
The reason for having two different over-speed functions is to prevent the engine from being stopped when a sudden rejection of load causes an over-speed situation. Over-speed Alarm Function
This function will act as an over-speed limiter in case the engine has an overshoot of 10%(660r/m).
The electro pneumatic over-speed device moves each fuel rack to the "no-fuel” position by means of a pneumatic cylinder mounted on each high pressure fuel pump. The three-way over-speed solenoid valve receives the signal from the electronic speed measuring system (Spemos). However, this solenoid valve can also be activated by other sources.
When the solenoid valve is activated, air is supplied to a second three-way valve which directs pressurized air to the pneumatic cylinders. The pistons of the pneumatic cylinders actuate the fuel pump rack to the "no-fuel” position. Speed setting adjustments are to be made i n the Spemos control box.
1.According to the passage, when the engine has a speed of 630r/m,
A.the alarm function will thoroughly reduce the fuel rod to zero position
B.the stop function will quickly stop the engine
C.the governor still controls the engine
D.the engine speed will continuously increase
2.according to the passage, we know that •
A.the speed monitoring sensor can detect the difference between two overshoots
B.even when the over-speed alarm function is activated the engine will not be stopped.
C.The reason for having over-speed trip device is to prevent the engine from being stopped.
D.Air at max. 30 bar is used to stop the engine quickly in case of a 15% overshoot.
3.It can be inferred from the passage that "a second three-way valve" is
A. A solenoid valve
B. A hydraulic valve
C. A pneumatic valve
D.An electron pneumatic valve
4.The over-speed trip device is controlled
A. Manually
B. hydraulically
C. pneumatically D・ electronically
5.The stop function will cause
A. a sudden rejection of load
B. the solenoid valve to be activated
C. a shutdown of the engine
D. the engine speed to drop
Passage2
The diesel engine is a form of internal combustion engine similar to that used in a bus. Its power is expressed as brake horsepower (bhp). This is the power put out by the engine. Effective horsepower is the power developed by the piston in the cylinder, but some of this is lost by friction within the engine. The power output of a modern marine diesel engine is about 40000 brake horsepower. This is now expressed in kilowatts. By comparison the engine of a small family car has an out put of about 80 bhp. Large diesel engines which have cylinder nearly 3 ft in diameter,
turn at the relatively slow speed of about 108 rpm・ These are known as slow-speed diesel engines. They can be connected directly to the propeller without gearing. Alt hough higher power could be produced by higher revolutions, t his would reduce the efficiency of the propeller, because a propeller is more efficient, the larger it is and the slower it turns. These large slow running engines are used in the larger merchant ships, particularly in tankers and bulk carriers. The main reason is their low fuel consumption. More and more of the larger merchant vessels are being powered by medium-speed diesel engines. These operate between 150-450 rpm, therefore they are connected to the propeller by gearing. This type of engine was once restricted to smaller cargo ships, but now they are used in fast cargo liners as well as in tankers and bulk carriers. They are cheaper than slow-speed diesel engines, and their small size and weight can result in a smaller, cheaper ship.
Why do larger merchant vessels use slow-speed diesel engines?
because they turn at about 108r/min
because their propellers car more efficient
because they can be connected directly to the propeller without gearing because they are fuel-saving
According to the author s standpoint, what does the efficiency of slow-speed diesel engine propellers depend on?
A. propeller power B・ both propeller size and revolution
C. propeller
D. propeller revolutions
3.Why do medium-speed diesel engines have gearing?
A. in view of propeller efficiency
B. in view of engine revolution
C. in view of fuel consumption
D. in view of merchant ship size
4.What is probably the main reason why medium - speed diesel engines were once restricted to smaller cargo ships?
A.They are cheaper than slow-speed diesel engine.
B.The fuel consumption of the medium speed engine is more than that of the slow speed engine.
C.They operate between 150 and 450 r/m.
D.Smaller cargo ships require more efficient propeller.
附加1
1.The difference between measured and desired values is called C ・
A. Offset
B. error
C. deviation(偏差)
D. set value
2.The advantage of an integral adjuster is B
A. timely adjusted
B. eliminating static deviation
C. advanced adjustment
D.high stability
3.What' s the multiple of force exciation for the regulator? () __________
A. 0-1
B. 1-2
C. 2-3
D. 3-4
4.the viscosity detec tor t ransmits a(n) B signal propor tio nal to the viscosi ty measured.
A. induction EMF
C. pressure
5.T he time program
A. PLC
B.
C. flame detector
B. differential pressure
D. D. C.voltage controller of
multi-circuit
D.
the auxiliary boiler burner cannot be a(n) C time relay
6.T he water transducer
A. output device
C. discharging switch
7.The reference value cam timer
of a fuel
B. sensor
D. receiver
of water content is set into the B
oil purification system is a(n)_B_
1.
A.
B.
C.
D.
A. water transducer
B. control unit
C. separator bowl
D. clarifier 8. Which of the
following
manipulation has
the priority? A
A. Machine side C.bridge
9. Which of the
A. chip of 8251
10. What is the indication when the digital tube shows 15? A
A. open circuit
B. short circuit
C. switch open
D. switch closed B. machine control room D ・chief engineers room following is used for the printer interface circuit ? _A B. chip of 8255 C. 2812 D. 2810。