单项选择题 If a crankcase explosion has occurred in a diesel engine, and the crankcase remains intact, which of following precautions should be observed?（）

单项选择题 A sudden power loss from a turbocharged and after-cooled diesel engine is an indication of a/an（）

单项选择题 If a diesel engine has been stopped because of piston seizure due to severe overheating, the crankcase（）