單項(xiàng)選擇題

Air scavenging of a diesel engine cylinder（）

A.blows out the exhaust gases
B.supplies oxygen for combustion
C.cools the valves and cylinder walls
D.all of the above

你可能感興趣的試題

The term diesel engine scavenging means（）

A.delivering more air into the cylinder than it would normally receive during an ordinary charging process
B.forcing the products of combustion out of the cylinder with the fresh air charge
C.collecting the air charge at the cleaner
D.combustion and expansion of hot gas

單項(xiàng)選擇題

A diesel generator has just been paralleled with an AC turbo-generator, but the load can not be properly divided.This could be caused by（）

A.an incorrect diesel generator governor speed droop adjustment
B.a faulty reverse power relay within the main circuit breaker assembly
C.unsynchronized isochronous load distribution adjustments
D.a different speed setting on each unit