A vessel sounding a fog signal of one short,one prolonged,and one short blast is indicating that the vessel is ().
A.fishing
B.in distress
C.at anchor
D.not under command
正确答案:C

A vessel sounding a fog signal of one short,one prolonged,and one short blast is indicating that the vessel is ().
A.fishing
B.in distress
C.at anchor
D.not under command
正确答案:C
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