单项选择题
A “spring line” is（）.
A.any wire rope used for mooring B.a fire-warp C.a mooring line running diagonally to the keel D.a mooring line perpendicular to the keel
单项选择题 A “sheepshank” is used to（）.
单项选择题 A “reaching” course is one in which the wind（）.
单项选择题 A “Mediterranean moor” should be used when（）.
