单选题In moderate wind and current what should be the length of chain with a single anchor?（）A5 times the depth of the water in good holding groundB10 times the depth of the water in shallow waterC2 times the depth of the water in poor holding groundD8 times the depth of the water in deep water
单选题
In moderate wind and current what should be the length of chain with a single anchor?（）
A
5 times the depth of the water in good holding ground
B
10 times the depth of the water in shallow water
C
2 times the depth of the water in poor holding ground
D
8 times the depth of the water in deep water
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