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

<nobr id="95z00"><cite id="95z00"></cite></nobr>

<del id="95z00"></del>

<progress id="95z00"><th id="95z00"></th></progress>

單項(xiàng)選擇題

The （） returns the pump operating rod to mid position as soon as the helmsman stops turning the wheel.

A.hunting gear
B.cut-off level
C.servo-motor
D.swivel block

你可能感興趣的試題

單項(xiàng)選擇題

The （） in the steering gear system provides the force.

A.control equipment
B.power unit
C.transmission mechanisms
D.fittings and pipeline

單項(xiàng)選擇題

The cable lifter, mooring drum and warp end of a split windlass may be separately engaged or disengaged means of a （）

A.dog clutch
B.Pair of gears
C.worm gear
D.turning gear

<output id="nfllv"></output>

<nobr id="nfllv"></nobr>

<xmp id="nfllv"></xmp>