A sailing vessel shall not impede the safe passage of a（）．<br>A:power-driven vessel following a traffic lane<br>B:pilot vessel enroute to a pilot station<br>C:law enforcement vessel<br>D:All of the above

A sailing vessel shall not impede the safe passage of a（）．
A:power-driven vessel following a traffic lane
B:pilot vessel enroute to a pilot station
C:law enforcement vessel
D:All of the above

出自：海船船员证

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