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

Aboard a vessel, dividing the sum of the vertical moments by the total weight yields the vessel’s().

A.height of the center of gravity A.LCG
B.vertical moment
C.righting moment
D.inclining moment

微信掃碼免費搜題