船舶英语练习题1

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 equipment in the automatic marine power plant control network doesn’t include __C___

A. PLC B. generator 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

10. _C___is the actual value of the controlled condition. A. Designed value B. Set value C. Measured value D. Deviation

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

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 18.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 in 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 t …… 此处隐藏：7183字，全部文档内容请下载后查看。喜欢就下载吧 ……