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

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


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1.單項(xiàng)選擇題Distress flares and smoke signals for small passenger vessels（）.

A.are not required aboard vessels on runs of less than 30 minutes duration
B.must be Coast Guard approved and stowed in a portable，watertight container
C.must be marked with an expiration date not more than 42 months from the date of manufacture
D.All of the above

2.單項(xiàng)選擇題At night，if you see a vessel ahead displaying the lights shown you should（）.

A.provide assistance as the vessel is in distress
B.stay clear as the vessel is transferring dangerous cargo
C.stay clear as the vessel is fishing
D.change course to the right as the vessel is crossing your bow

3.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

4.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

5.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