搜题

【单项选择题】

An efficient seal between the cylinder block and cylinder heads on many diesel engines is obtained with（）

A、A.graphite packing

B、B.sealing compound

C、C.lubricating oil

D、D.gaskets

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更多“An efficient seal between the cylinder block and cylinder heads on many diesel engines is obtained with（）”相关的问题

第1题

[单选题] What happens to the efficiency of an anchor when it is moved from sand to mud?（）

A、The efficiency increases B、The efficiency decreases C、The efficiency remains the same D、The efficiency cannot be determined.

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第2题

[单选题] The locker will（）as long as your ship is here.

A、Be kept sealed B、Be released from being sealed C、Be kept signed D、Be released from being signed

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第3题

[单选题] Increased air （） will raise scavenge efficiency and allow a greater mass of air to be compressed； more fuel may now be burned giving an increased power.

A、specific volume B、density C、viscosity D、calorific value

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第4题

[单选题] The fitting of an efficient radar reflector is likely to considerably increase the ship’s probability of（）.

A、detection B、being detected C、the detective D、the detected

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第5题

[] By regulation，life preservers aboard an uninspected towing vessel must be（）.

A、A.readily accessible B、B.securely stowed C、C.stored in sealed containers D、D.stowed with the emergency provisions

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第6题

[单选题] The film of oil between the rings and the liner is not only essential for the lubrication but also plays an important part in achieving （）.

A、an oil seal B、removing heat C、a gas seal D、cooling the piston

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第7题

[单选题] The lowest ring of a piston is （）.

A、a coil spring B、a sealing ring C、an oil distributor ring D、main seal ring

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第8题

[] Puncture leaks in the lower tubes or bottom of an inflatable liferaft should FIRST be stopped by using（）.

A、A.sealing clamps B、B.repair tape C、C.a tube patch D、D.sail twine and vulcanizing kit

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第9题

[单选题] In the process of the shafting management, special attention should be paid to（）

A、on the sailing, the water in the aft peak tank should be excluded as much as possible B、the stuffing style ahead sealing shouldn’t have any water leaking out C、Simplex astern sealing shouldn’t have any oil leaking out D、Simplex ahead sealing can have some oil leaking out

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