单项选择题
Higher than normal temperature air passing through the intake of a diesel engine will result in（）
A.greater overall efficiency B.greater fuel economy C.lower horsepower D.lower compression ratio
单项选择题 Air scavenging of a diesel engine cylinder（）
单项选择题 The term diesel engine scavenging means（）
单项选择题 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（）
