單項(xiàng)選擇題()there danger of explosion?

A.Is
B.Has
C.If
D.Do


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1.單項(xiàng)選擇題()the whole the stowage is all right.

A.In
B.On
C.From
D.To

3.單項(xiàng)選擇題()the ship leaves at 1000 today,she can arrive there tomorrow.

A.When
B.How
C.If
D.Should

4.單項(xiàng)選擇題()the packing is the same,the lots are different in marks.

A.For
B.Since
C.Because
D.Although

5.單項(xiàng)選擇題()the morning from 0800 to 1200 Chief Officer is on duty.

A.On
B.In
C.At
D.During