______ conveys a signal of desired rudder angle from the bridge and activates the power un

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______ conveys a signal of desired rudder angle from the bridge and activates the power unit and transmission system unit the desired angle is reached.

A.The control equipment

B.The power unit

C.The transmission system

D.The follow-up mechanism

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热搜:关于氨基酸代谢错误的论述是_________。