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单选题
Forcing the exhaust gases form the cylinder of an operating diesel engine with the aid of a blower is known as （）
A
scavenging
B
forced draft
C
turbo-charging
D
aspiration
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frameB
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below normal with a normal exhaust temperatureD
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单选题If you notice smoke coming fro the crankcase exhaust fan outlet of an operating diesel engine, you would suspect（）A
a cracked cylinder linerB
clogged intake portsC
broken piston ringsD
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考题
单选题The process of scavenging a two-stroke/cycle diesel engine serves to（）A
improve fuel flow volumeB
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单选题A piston is said to be at top dead center when it is （）A
opening the exhaust portsB
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connect the exhaust gas pyrometers
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