單項(xiàng)選擇題Each lifebuoy shall be marked in block capitals of the Roman alphabet with()of the ship.

A.the call sign and name
B.the official number and name
C.the port of registry and name
D.the port of registry and official number


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1.單項(xiàng)選擇題Every state, whether coastal or not,()to sail ships under its flag on the high seas.

A.has no right
B.has partial right
C.has the right
D.has not any right

2.單項(xiàng)選擇題How many()are there altogether?

A.sweeping bag
B.sweepings bag
C.sweeping bags
D.sweepings bags

3.單項(xiàng)選擇題I can hardly understand()you said.

A.what
B.which
C.that
D.who

4.單項(xiàng)選擇題It’ll affect neither the draft()the rotation of discharging.

A.or
B.and
C.nor
D.either