单选题In the absence of a route leading from seaward，the conventional direction of buoyage generally follows（）.Aan anti-clockwise direction around land massesBa clockwise direction around land massesCan anticlockwise direction around sea massesDa clockwise direction around sea masses
单选题
In the absence of a route leading from seaward，the conventional direction of buoyage generally follows（）.
A
an anti-clockwise direction around land masses
B
a clockwise direction around land masses
C
an anticlockwise direction around sea masses
D
a clockwise direction around sea masses
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