Which of the devices listed, when used on an electro-hydraulic steering gear, keeps the movement of the redder closely in step with the steering wheel?（）<br>A:The follow-up gear<br>B:The rudder angle indicator<br>C:The synchronous electric transmitter<br>D:A rudder angle limit switch

Which of the devices listed, when used on an electro-hydraulic steering gear, keeps the movement of the redder closely in step with the steering wheel?（）
A:The follow-up gear
B:The rudder angle indicator
C:The synchronous electric transmitter
D:A rudder angle limit switch

出自：海船船员证

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