Low compression of diesel engine may result from （）

【名词&注释】

柴油机(diesel engine)、填料函(stuffing box)、活塞杆填料、连续工作时间、规定值

[单选题]Low compression of diesel engine may result from （）

A. a worn cylinder
B. broken piston rings
C. any of A and B
D. none of the above

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学习资料：

[单选题]若产品在规定的条件下，规定的时间为r，从开始工作到发生故障的连续工作时间为T，则产品的可靠度为（）。

A. R（t）
B. F（t）
C. λ（t）
D. E（t）

[单选题]MANB&W型柴油机活塞杆填料函工作环的平面间隙和环端间隙超过规定值的（）时，应当换新。

A. A．10%
B. B．30%
C. C．50%
D. D．80%

[单选题]A distance piece, known as a （） may be interposed between the rod and the bearing housing.

A. bearing shell
B. bearing liner
C. compression plate
D. lead wire

[单选题]Each cylinder liner on the marine medium speed engines （）.

A. is usually cooled by sea water
B. can be replaced when worn out
C. is in direct contact with the water in the bore of the cylinder
D. can t expand when heated

[单选题]With VIT the start of injection may be （） as the engine load is reduced within a certain range.

A. advanced
B. retarded
C. relayed
D. cut off

[单选题]When an auxiliary boiler is panting and emitting black smoke, you should （）.

A. increase the fuel oil temperature
B. decrease the fuel oil temperature
C. decrease the fuel oil supply pressure
D. increase the air supply

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