单项选择题
Misalignment of the drive shaft and propeller shaft flanges can be detected by using a dial indicator or （）
A.inside micrometer B.feeler gauge and straight edge C.adjustable trammel D.sighting device
单项选择题 Some diesel engines are supercharged with a （）
单项选择题 Metal particles accumulated from the wearing of components in a diesel engine can result from lube oil that has been contaminated with（）.
单项选择题 In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with（）
