You have been informed that dredging operations may be underway in your vicinity.Which buoy indicates the dredging area（）.<br>A:White buoy with a green top<br>B:White and international orange buoy<br>C:Yellow buoy<br>D:Yellow and black vertically-striped buoy

You have been informed that dredging operations may be underway in your vicinity.Which buoy indicates the dredging area（）.
A:White buoy with a green top
B:White and international orange buoy
C:Yellow buoy
D:Yellow and black vertically-striped buoy

出自：海船船员证

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