单选题When two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision，they shall be deemed to be in（）.Acrossing situationBhead-on situationCrestricted visibilityDovertaking situation
单选题
When two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision，they shall be deemed to be in（）.
A
crossing situation
B
head-on situation
C
restricted visibility
D
overtaking situation
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