97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久

單項(xiàng)選擇題

When the order （） is received from the bridge, the main air stop valve in the starting air line should be shut.

A.stand-by engine
B.full ahead
C.finished with engine
D.full away

你可能感興趣的試題

單項(xiàng)選擇題

When the follower is on the base circle of the cam, the pump plunger is at the （） of its stroke.

A.top
B.middle
C.bottom
D.any of the above

單項(xiàng)選擇題

When a crankshaft has to be handled outside the engine, it should be carefully supported in a manner which will avoid （） high bending moments on it.

A.compressing
B.interposing
C.imposing
D.pounding

<pre id="oili3"><acronym id="oili3"></acronym></pre>