A.cast iron
B.forged steel
C.stainless steel
D.aluminum alloy
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A.lifted
B.reassembled
C.dismounted
D.disassembled
A.a low load on that cylinder
B.sluggish piston ring action
C.excessive piston crown cooling
D.excessive clearance of piston pin
A.the same as
B.similar to
C.separated from
D.different from
A.safety valve
B.indicator cock
C.blow-down valve
D.start valve
A.the exhaust valve
B.the starting air
C.the inlet valve
D.the fuel oil
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In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
Lube oil cannot be efficiently filtered if its （）.
The function of diesel engine piston compression rings is to （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
An automated diesel engine should normally shut down due to （）
White smoke exhausting from an operating diesel engine may indicate （）.
If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
In a simple mechanical governor, the （）.