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 we had stayed at that port much longer，we（）the tropical storm.

A.will meet with
B.met with
C.would meet with
D.would have met with

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

3.單項(xiàng)選擇題Distress signals may be（）.

A.red flares
B.smoke signals
C.sound signals
D.Any of the above

5.單項(xiàng)選擇題At night you observe a vessel ahead show three flashes of a white light. This signal indicates that the vessel ahead is（）.

A.in distress
B.approaching a bend in the channel
C.operating astern propulsion
D.intending to overtake another vessel