单项选择题

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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单项选择题Which of the following condition is likely to develop if the thermocouple element of a pyrometer becomes coated with excessive amounts of combustion by-products?（）

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船舶电气与船舶安全

Forcing the exhaust gases form the cylinder of an operating diesel engine with the aid of a blower is known as （）