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单选题
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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