單項(xiàng)選擇題

On open waters，a power-driven vessel shall keep out of the way of a（）.

A.vessel on her port side that is crossing her course
B.vessel that is overtaking her
C.seaplane on the water
D.sailing vessel

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單項(xiàng)選擇題

It has often been stressed in the Courts that the look-out man should，preferably，be stationed forward，unless weather conditions make this（）.

A.possible
B.practicable
C.impossible
D.probably

單項(xiàng)選擇題

In the daytime，you see a large sailing vessel on the beam. You know that she is also propelled by machinery if she shows（）.

A.a basket
B.a black ball
C.a black cone
D.two black cones