单选题A single vessel being towed alongside shall exhibit（）.Aone all-round white lightBsidelights and a stern lightConly the outboard sidelight and a stern lightDa masthead light，sidelights，and a stern light
单选题
A single vessel being towed alongside shall exhibit（）.
A
one all-round white light
B
sidelights and a stern light
C
only the outboard sidelight and a stern light
D
a masthead light，sidelights，and a stern light
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