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单选题
The risk of collision shall be deemed to exist if the compass bearing of an approaching vessel （）.
A
did not appreciably change
B
does not appreciably change
C
do not appreciably change
D
not appreciably change
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单选题In determining if risk of collision exists the following considerations shall be among（）.A
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单选题Risk of collision is considered to exist if（）.A
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单选题Every vessel shall（）maintain a proper look-out by sight and hearing as well as by all available means appropriate in prevailing circumstances and conditions so as to make a full appraisal of the situation and of the risk of collision.A
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单选题You hear the fog signal of another vessel forward of your beam.Risk of collision may exist.You MUST（）.A
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单选题When two power-driven vessels are meeting head-on and there is a risk of collision,each shall（）.A
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单选题Risk of collision may exist（）.A
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单选题When shall the stand-on vessel in a crossing situation take action to avoid the other vessel（）.A
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单选题The Rules state that risk of collision shall be deemed to exist（）．A
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考题
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单选题In determining if risk of collision exists，if there is any doubt，such risk shall be deemed to（）.A
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one sidelight and the masthead light are visibleB
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单选题Which one of the following rules is not regarding two power-driven vessels meeting end or nearly end on so as to involve risk of collision（）.A
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Each shall indicate such action by one short blast on the whistle
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