單項(xiàng)選擇題If you are on the beach and are signaling to a small boat in distress that your present location is dangerous and they should land to the left，you would（）.

A.fire a green star to the left
B.send the letter K by light and point to the left
C.place an orange signal to your left as you signal with a white light
D.send the code signal S followed by L


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1.單項(xiàng)選擇題If more than one raft is manned after the vessel has sunk，you should（）.

A.Go in a different direction in search of land
B.Spread out to increase the possibility of a search aircraft finding you
C.Reduce the number of rafts by getting as many people as possible into as few rafts as possible
D.Tie the rafts together and try to stay in a single group

2.單項(xiàng)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

4.單項(xiàng)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

5.單項(xiàng)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