單項選擇題If an airplane circles a vessel 3 times,crosses the vessel’s course close ahead while rocking the wings,and heads off in a certain direction,what does this indicate().

A.The plane is in distress and will have to ditch
B.The plane is going to drop a package and wishes the vessel to recover it
C.Someone is in distress in that direction and the vessel should follow and assist
D.There is danger ahead and the best course is indicated by the direction of the aircraft


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2.單項選擇題Generally,you can best keep a vessel under steering control when the vessel has().

A.Headway
B.Sternway
C.No way on,with engines stopped
D.No way on,with engines full ahead

3.單項選擇題Generally speaking,the most favorable bottom for anchoring is().

A.Very soft mud
B.Rocky
C.A mixture of mud and clay
D.Loose sand

4.單項選擇題During an annual FCC inspection().

A.All required documents and publications may have to be produced
B.Licensed GMDSS radio operators may be required to demonstrate equipment competencies
C.All required equipment must be fully operational
D.All of the above