According to Regulations, a power driven auxiliary steering gear for a vessel capable of a 20 knot service speed, must be capable of producing a rudder movement at which of the minimum speeds listed below?（）<br>A:7 knots<br>B:10 knots<br>C:15 knots<br>D:20 knots

According to Regulations, a power driven auxiliary steering gear for a vessel capable of a 20 knot service speed, must be capable of producing a rudder movement at which of the minimum speeds listed below?（）
A:7 knots
B:10 knots
C:15 knots
D:20 knots

出自：海船船员证

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