Fire protection regulations apply to those towing vessels（）.<br>A:used only for pollution response<br>B:owned and operated by the US government<br>C:used only within a barge fleeting area<br>D:used only on inland waters

Fire protection regulations apply to those towing vessels（）.
A:used only for pollution response
B:owned and operated by the US government
C:used only within a barge fleeting area
D:used only on inland waters

出自：海船船员证

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