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(xiàng)選擇題

The machinery associated with heaving in and running out anchor chain is the（）.

A.winch
B.windlass
C.draw works
D.dynamic pay out system

你可能感興趣的試題

單項(xiàng)選擇題

The joint of the riser in a marine riser system that compensates for heave，the up-and-down motion of a floater，is the（）.

A.flex joint
B.slip joint
C.heave joint
D.riser joint

單項(xiàng)選擇題

The athwartship hull structural members of a ship are（）.

A.stringers
B.girders
C.breasthooks
D.deck beams