An encoder sensor typically detects：（）A、paper position.B、shaft rotation.C、magnetic flux.D、laser beam strength.
An encoder sensor typically detects：（）
- A、paper position.
- B、shaft rotation.
- C、magnetic flux.
- D、laser beam strength.
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单选题An encoder sensor typically detects：（）Apaper position.Bshaft rotation.Cmagnetic flux.Dlaser beam strength.