A.if the compass bearing of an approaching vessel does not appreciably change
B.even when an appreciable bearing change is evident, particularly when approaching a vessel at close range
C.if you observe both sidelights of a vessel ahead for an extended period of time
D.All of the above
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A.if the compass bearing of an approaching vessel does not appreciably change
B.even when an appreciable bearing change is evident, particularly when approaching a vessel at close range
C.if you observe both sidelights of a vessel ahead for an extended period of time
D.All of the above
A.Both vessels must be power-driven
B.They must be meeting on reciprocal or nearly reciprocal courses
C.The situation must involve risk of collision
D.All of the above
A.in a crossing situation
B.in a meeting situation
C.when they are the overtaking vessel
D.on the inland waters of the PR China
A.velocit in knot
B.irection from which it flows
C.estimated current
D.direction toward which it flows
A.have
B.have been
C.has
D.has been
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When the wave period and the apparent rolling period are the same（）.
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Which wind results from a land mass cooling more quickly at night than an adjacent water area?（）
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（）is on the panel of radar.
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