单项选择题

A.privileged vessel and would sound two short blastsB.b……

A sailing vessel is overtaking a steam vessel in a fairway on International waters，so as to pass on the steam vessel’s port side． The sailing vessel is the（）.

A.privileged vessel and would sound two short blasts
B.burdened vessel and would sound two prolonged blasts followed by two short blasts
C.burdened vessel and would sound no whistle signal
D.privileged vessel and would sound no whistle signal

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单项选择题In the daytime，you see a large sailing vessel on the beam. You know that she is also propelled by machinery if she shows（）.

A.a basket
B.a black ball
C.a black cone
D.two black cones

单项选择题Under International Rules（）.

A.all vessels must carry an after range light
B.vessels less than 50 meters in length need not carry an after range light
C.vessels stopped dead in the water should turn off their range lights
D.vessels over 20 meters in length must carry both range lights from sunset to sunrise

单项选择题In determining if risk of collision exists the following considerations shall be among（）.

A.these taken into calculation
B.those taking into account
C.that taken into account
D.those taken into account

单项选择题The Rules state that a seaplane shall（）.

A.not be regarded as a vessel
B.in general，keep well clear of all vessels
C.proceed at a slower speed than surrounding vessels
D.when making way，show the lights for a vessel not under command

单项选择题A vessel is approaching from dead ahead． Both of her sidelights are visible and her range lights are in line. Which of the following could you do first?（）.

A.Sound one blast of the whistle
B.Alter course to starboard
C.Construct a radar plot
D.Sound the danger signal