单项选择题
A.out B.off C.down D.away
It was demanded that the injured crewmembers（）at once.A...
单项选择题It was demanded that the injured crewmembers（）at once.
A.was treated B.would be treated C.being treated D.be treated
It is NOT advisable to use nylon for alongside towing b...
单项选择题It is NOT advisable to use nylon for alongside towing because it（）.
A.stretches too much B.is too difficult to make fast C.parts too readily D.is too susceptible to mildew
It is good practice to use long towlines for ocean tows...
单项选择题It is good practice to use long towlines for ocean tows because the（）.
A.wear on the towline is equalized B.weight of the towline increases the towing force C.dip in the towline absorbs shock loads D.danger of overriding is reduced
