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

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

微信掃碼免費(fèi)搜題