单选题Scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished()Aduring the valve overlap periodBwith only the exhaust valve openCat a pressure below atmosphericDwithout cooling the cylinders or pistons

单选题
Scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished()
A

during the valve overlap period

B

with only the exhaust valve open

C

at a pressure below atmospheric

D

without cooling the cylinders or pistons


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