单项选择题
A.a cracked cylinder liner
B.clogged intake ports
C.broken piston rings
D.a faulty head gasket
单项选择题 When restarting a heavy fuel diesel engine that has been stopped for some time, the engine should（）
单项选择题 Water accumulation in the cylinder of a secured engine is an indication that the （）
单项选择题 If a diesel engine turned over at normal cranking speed but failed to start, the cause could be late fuel injection or （）