无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

單項選擇題

（） may be the first possible cause which makes the engine to lose power or slow down when it is running.

A.Hot bearing
B.Starting valves
C.Unequal distribution of load
D.Excessive crankshaft clearance

你可能感興趣的試題

單項選擇題

（） is used for cylinder and cylinder head, the salt water is used for cooling the lubricating oil, the fresh water in the coolers and the charging air in the air cooler.

A.The fuel oil
B.The lube oil
C.The sea water
D.The fresh water

單項選擇題

（） is the removal of exhaust gases by blowing in fresh air.

A.Gas exchange
B.Charging
C.Scavenging
D.Supercharging