单项选择题

If the named port is one at which no tugs are ever obtainable，and the chartered vessel can not，by reason of her size，reach that port without the assistance of tugs，the port is（）.

A.safe
B.not safe
C.good
D.not good

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单项选择题

If it is impossible to avoid a hurricane in the Northern Hemisphere，the most favorable place to be when the storm passes is in（）.

A.the dangerous semicircle
B.the eye (center) of the storm
C.that half of the storm lying to the right of the storm's path
D.that half of the storm lying to the left of the storm's path

单项选择题

Following a collision or accident，the Master of each vessel involved must render assistance to persons affected by the collision or accident（）.

A.if he can do so without any risk to his vessel
B.if he can do so without undue delay
C.if he can do so without serious danger to his vessel or to individuals on board
D.without regard to any danger to his vessel