A vessel reduces speed without backing. The rate that her speed through the water decreases depends primarily on the（）.<br>A:vessel's horsepower<br>B:sea state<br>C:number of propellers<br>D:vessel's displacement

A vessel reduces speed without backing. The rate that her speed through the water decreases depends primarily on the（）.
A:vessel's horsepower
B:sea state
C:number of propellers
D:vessel's displacement

出自：海船船员证

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