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

單項選擇題

During severe storms when survival becomes a major concern,it may become necessary to relieve high anchor tensions on the windward side of the unit by().

A.deballasting the rig
B.ballasting the rig
C.paying out cable on the windward side
D.paying out cable on the leeward side

微信掃碼免費搜題