單項(xiàng)選擇題All of the following are recognized distress signals under the Navigation Rules EXCEPT（）.

A.a green star signal
B.orange-colored smoke
C.red flares
D.the repeated raising and lowering of outstretched arms


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1.單項(xiàng)選擇題All of the following are distress signals under the Rules EXCEPT（）.

A.International Code Signal "AA"
B.orange-colored smoke
C.red flares
D.the repeated raising and lowering of outstretched arms

2.單項(xiàng)選擇題According to the “Vessel Bridge-to-Bridge Radiotelephone Act”，your radiotelephone log must contain（）.

A.a record of all routine calls
B.a record of your transmissions only
C.the home address of the vessel's Master or owner
D.a summary of all distress calls and messages

3.單項(xiàng)選擇題A vessel，which does not normally engage in towing operations，is towing a vessel in distress. She（）.

A.need not show the lights for a vessel engaged in towing，if it is impractical to do so
B.may show the lights for a vessel not under command
C.must show a yellow light above the stern light
D.must show the lights for a vessel towing

4.單項(xiàng)選擇題A vessel sounding a fog signal of one short，one prolonged，and one short blast is indicating that the vessel is（）.

A.fishing
B.in distress
C.at anchor
D.not under command

5.單項(xiàng)選擇題A vessel in distress should send by radio telephone the two tone alarm signal followed immediately by the（）.

A.distress position
B.spoken words "Mayday，Mayday，Mayday"
C.ship's name
D.ship's call letters