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【单选题】
使命题公式¬P→(Q∧R)的T的P,Q,R的指派是()A.
F，F，F
B.
F，F，T
C.
F，T，F
D.
T，F，F
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A.
It 's a warning of navigation for my vessel
B.
l t 's an advice from Port Control to order my vessel not enter the traffic route of the harbor.
C.
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D.
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A.
enter the pack on the windward side where there is a well defined ice edge
B.
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C.
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D.
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A.
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B.
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C.
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D.
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