When starting air is admitted, a diesel engine turns over very slowly without firingThe cause may be （）<br>A:an obstruction in an cylinder<br>B:water accumulation in some engine cylinders<br>C:low starting air pressure<br>D:low scavenge air pressure

When starting air is admitted, a diesel engine turns over very slowly without firingThe cause may be （）
A:an obstruction in an cylinder
B:water accumulation in some engine cylinders
C:low starting air pressure
D:low scavenge air pressure

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