單項選擇題

Poor combustion in a diesel engine can be caused by （）.

A.high compression pressure
B.low intake air temperature
C.low exhaust pressure
D.high scavenge air temperature

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A built-up exhaust valve is one in which （）.

A.the stem and heads are made of different material
B.low-alloy steel is used throughout
C.a replaceable valve disk is welded to the head
D.the self-centering action comes from motion of the valve stem in the guide

單項選擇題

If scavenge box should be hot, （）would occur.

A.seized piston
B.defective atomizer
C.scavenge fire
D.too much LO

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Poor combustion in a diesel engine can be caused by （）.

你可能感興趣的試題

A built-up exhaust valve is one in which （）.

If scavenge box should be hot, （）would occur.

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