自考10012轮机英语(二)模拟试题13

试题数量：51道
免费次数：登录后，试做1次
练习次数：156次
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试卷简介

该试卷共包含51道试题，试题类型如下:

单选题

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1、[单选题]The extended aeration process consists of ____ the liquor either by bubbling air through it or by agitating the surface.
- A.deoxygenating
- B. oxygenating
- C. chemicalizing
- D. disinfecting
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2、[单选题]____ are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
- A.anaerobic bacteria
- B. aerobic bacteria
- C. air bubbles
- D. disinfection chemicals
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3、[单选题]In order to culture and propagate enough bacteria to treat the body and galley wastes____
- A.a new bacteria colony should be put into the plant in advance
- B. the disinfection chemicals should be always used
- C. the air blower should be started and keep running in advance
- D. the nutrient for bacteria should put into plant in advance
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4、[单选题]____with various arrangements of barrels are the usual mooring equipment used on board ships
- A.cranes
- B. winches
- C. capstans
- D. windlass
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5、[单选题]The ____ is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.
- A.cranes
- B. winch barrel
- C. capstans
- D. windlass
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6、[单选题]In automatic ____ the winch may be overhauled and wire is paid off the barrel at a pre-determined maximum tension
- A.cranes
- B. windlass
- C. capstans
- D. mooring winches
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7、[单选题]The majority of automatic mooring winches are spur geared to improve the backward efficiency of the gear train for rendering
- A.spur geared
- B. screw geared
- C. worm geared
- D. belt driven
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8、[单选题]Worm geared automatic mooring winches are ____ as the multi-start feature reduces the advantage of worm gear i. ethe high gear radio.
- A.popular
- B. common
- C. in lead position
- D. uncommon
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9、[单选题]The rotating unit of a spilt windlass consists of a____ with shaped snugs to grip the anchor cablea mooring drum for paying out or letting go of mooring wires and warp end for warping duties.
- A.cranes
- B. mooring barrel
- C. capstans
- D. cable lifter
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10、[单选题]The cable lifter, mooring drum and warp end of a split windlass may be separately engaged or disengaged means of a ____.
- A.dog clutch
- B. Pair of gears
- C. worm gear
- D. turning gear
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11、[单选题]The ____ in the steering gear system provides the force.
- A.control equipment
- B. power unit
- C. transmission mechanisms
- D. fittings and pipeline
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12、[单选题]The ____ returns the pump operating rod to mid position as soon as the helmsman stops turning the wheel
- A.hunting gear
- B. cut-off level
- C. servo-motor
- D. swivel block
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