單項選擇題When a wind is permanently changing the direction from which it blows, it is().

A.variable
B.changing
C.backing
D.veering


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1.單項選擇題When it is advisable to remain on VHF channel 14 you should say().

A.stand by on VHF channel 14
B.come to VHF channel 14
C.VHF channel 14 is the best place for you to stay by
D.remain in channel 14 and do not change

2.單項選擇題()is the most liable to spontaneous combustion.

A.Cement
B.Chinaware
C.Fish meal
D.Steel products

5.單項選擇題As matter of fact, the damage to the winches was due to().

A.insufficiency of packaging
B.inherent vice of the cargo
C.improper stowage
D.rough handling