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

A.cooling
B.smothering
C.shielding of radiant heat
D.breaking the chain reaction

你可能感興趣的試題

A.directly on flames
B.at room temperature
C.in an extremely cold climate
D.None of the above

A.to right the raft if it capsizes
B.to carry the raft around on deck
C.for crewmen to hang on to
D.to hang the raft for drying