Hydraulic machinery failures are commonly caused by contamination of the hydraulic fluid and （）.

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  A . within the space concerned B . outside the space concerned C . the throttle station D . within the fire room

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• In machinery space, the valves, pipes should be（）

  A . arranged as close to each other as possible to save space B . arranged far away from each other for convenient operation C . be fixed or clamped to avoid vibration D . kept easy removable as to convenient repairing work

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• After installing a new hydraulic pump in a system, what special attention should be given to the hydraulic system?（）

  A . The relief valves in the system should be readjusted B . The filters and strainers should be checked frequently C . All system pressure should be readjusted D . The system should be drained and renewed with a fluid of different operating characteristic

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• The additional mark （）in the Classification Certificate for Machinery represents that personnel are watching at engine assembly control station and monitoring all machinery and electronic devices.

  A . A.BRC B . B.MCC C . C.AUT-0 D . D.AUT-1

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• The function of the hydraulic telemotor transmitter used in an electro-hydraulic steering gear system is to （）.

  A . transmit the rudder angle to the bridge indicator B . prevent the control linkage from striking the stops when hard over C . automatically purge all entrained air from the system D . send hydraulic signals to the receiving unit

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• In the event of minor emergencies when the machinery spaces unattended （） will be informed of malfunction in the machinery by his cabin monitor.

  A . the chief engineer B . the engineer on cabin watch C . the bridge officer on watch D . the master

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• 英译汉：hydraulic

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• I HAVE PROBLEMS WITH MACHINERY.的中文意思是（）.

  A . A.我船有货物问题 B . B.我船有航行问题 C . C.我船有机械问题 D . D.以上都不对

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• Hydraulic control check value is generally used to （） in the marine hydraulic mechanism.

  A . control the back pressure of return oil B . lock the oil lines under some conditions C . change the direction of oil flow D . act as relief valve

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• The major cause of trouble in a mechanical-hydraulic governor is contamination of the hydraulic fluid by （）

  A . dirt B . fuel oil C . governor cooling water D . fuel oil tar

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• Our company has 30years’ experience（）the machinery line.

  A . on B . in C . about D . of

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• When the machinery spaces are in the periodic unmanned condition, shall be immediately available and on call to attend the machinery space（）.

  A . the chief engineer B . the designated engineer from shipyard C . the designated duty officer in charge of the engineering watch D . the designated surveyor from classification society

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• A hydraulic accumulator is designed to（）.

  A . store fluid under pressure B . act as a fluid reservoir C . provide overpressure relief D . replenish fluid to a system

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• If one hydraulic pump of an electro-hydraulic steering unit falls, the vessels steering can be initially and best maintained by using the （）.

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• Each fire hydrant serving machinery spaces containing oil fired boilers，internal combustion machinery，or oil fuel units must be equipped with a（）.

  A . fireman's outfit B . low-velocity spray applicator C . marine strainer D . pick axe

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• 水压力（hydraulic pressure）

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• Before reassembling any machinery, you should （）.

  A . replace all bearings regardless of length of service B . apply a heavy coat of oil to all mating surfaces C . clean any corroded surfaces and file all burrs smooth D . coat all parts with alemite grease

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• 水力混合（hydraulic mixing）

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• The officer in charge of the engineering watch shall continue to be responsible for machinery operations, （）the presence of the chief engineer in the machinery space.

  A . as long as B . unless C . despite D . till

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• In the design of hydraulic piping and equipment consideration is given to minimize turbulence in the hydraulic fluid, as this will cause （）.

  A . molecular fluid vibration B . energy losses C . wide pressure variations D . mechanical damage to control valve

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• Before any machinery is put in operation，you should（）.

  A . ventilate all compartments，see that the machinery is clean and there are no obstructions B . just turn the key and start up C . take for granted that there are no fuel leaks D . assume there are no volatile fumes in the engine space

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• The guard, fencing or shielding for moving parts or machinery can be removed for repair only when the machinery it belongs to（）

  A . stays at rest B . is working stably C . is worn out D . is in good operatio

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• Multiple choiceAll the machinery in the furniture___ made in china.

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• To make room for more machinery, the factory（)now.

  A．A.is enlarged B．B.is to enlarge C．C.is to be enlarging D．D.is being enlarged

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