你可能感興趣的試題

The emergency signal for fires is sounded on the ship’s whistle and general alarm as（）.

A.a continuous ringing for 10 seconds
B.one short ring followed by one long ring
C.two long rings of at least 20 seconds
D.a continuous ringing until the fire is extinguished

單項選擇題

The engine（）smoke and steam.

A.gives up
B.gives away
C.gives in
D.gives off