单项选择题
A.winch B.windlass C.draw works D.dynamic pay out system
The joint of the riser in a marine riser system that co...
单项选择题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
The athwartship hull structural members of a ship are（）...
单项选择题The athwartship hull structural members of a ship are（）.
A.stringers B.girders C.breasthooks D.deck beams
The antennas of the trucks on deck are not fitted（）.A.i...
单项选择题The antennas of the trucks on deck are not fitted（）.
A.in B.on C.out D.with
