单选题According to Regulations, a power driven auxiliary steering gear for a vessel capable of a 12 knot service speed, must be able to meet the rudder movement requirements at which of the minimum vessel speeds listed below?()A6 knotsB7 knotsC9 knotsD12 knots

单选题
According to Regulations, a power driven auxiliary steering gear for a vessel capable of a 12 knot service speed, must be able to meet the rudder movement requirements at which of the minimum vessel speeds listed below?()
A

6 knots

B

7 knots

C

9 knots

D

12 knots


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