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

To avoid excessive pressures in the fuel oil filling system during bunkering, you should ().

A.close the tank filling valves quickly
B.top off all tanks at the same time
C.rill completely all tanks to less than 95% full
D.reduce the loading rate when topping off

微信掃碼免費(fèi)搜題