What provides little or no indication that a vessel is dragging anchor? （）<br>A:Increasing radar range to a fixed object ahead<br>B:Drift lead with the line leading perpendicular to the centerline<br>C:Vibrations felt by placing a hand on the cable<br>D:Changing bearings to distant fixed objects abeam

What provides little or no indication that a vessel is dragging anchor? （）
A:Increasing radar range to a fixed object ahead
B:Drift lead with the line leading perpendicular to the centerline
C:Vibrations felt by placing a hand on the cable
D:Changing bearings to distant fixed objects abeam

出自：海船船员证

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