單項(xiàng)選擇題

Diesel engine air start system check valves are opened by （）

A.an air start cam
B.cylinder compression pressure
C.starting air pressure
D.valve springs

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單項(xiàng)選擇題

For a diesel engine, individual cylinder performance is commonly determined by exhaust gas（）

A.chemical analysis
B.back pressure readings
C.pyrometer readings
D.infrared analysis

單項(xiàng)選擇題

Low compression pressure in a diesel engine may be the result of （）

A.insufficient fuel supply due to fuel pump valves sticking or leaking
B.excessive mechanical clearance between the piston crown and cylinder head
C.excessively worn fuel pump plunger
D.excessive exhaust back pressure

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Diesel engine air start system check valves are opened by （）

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For a diesel engine, individual cylinder performance is commonly determined by exhaust gas（）

Low compression pressure in a diesel engine may be the result of （）