单项选择题

A check line is（）.

A.A safety line attached to a man working over the side
B.Used to measure water depth
C.Used to slow the headway of a barge
D.Used to measure the overhead height of a bridge

<上一题目录下一题>

热门试题

单项选择题

A（）is the intersection of the surface of a sphere and a plane passing through the center of the sphere.

A.great circle
B.small circle
C.large circle
D.general circle

单项选择题

A “Mediterranean moor” should be used when（）.

A.anchoring in the Mediterranean
B.docking stern to a berth
C.docking bow to a berth
D.anchoring in a strong current