单项选择题

When attempting to start a main propulsion diesel engine, the engine, the engine turns at the proper speed but will not startYou should check the（）

A.starting air pressure
B.scavenge air pressure
C.over-speed trip
D.banjo oiler line

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单项选择题

A.engine speed
B.kilowatt load
C.fuel injection pressure
D.air intake manifold temperature

单项选择题

A.engine speed
B.engine load
C.intake manifold pressure
D.atmospheric pressure

单项选择题

A.glazed liners or pistons
B.high lube oil pressure
C.excessive compression ratio
D.worn valve seats and valves