A vessel not under command sounds the same fog signal as a vessel（）.<br>A:towing<br>B:constrained by her draft<br>C:under sail<br>D:All of the above

A vessel not under command sounds the same fog signal as a vessel（）.
A:towing
B:constrained by her draft
C:under sail
D:All of the above

出自：海船船员证

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