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Turbine engine tachometers usually measure speed as a percentage of the nominal maximum speed of the turbines.

A涡轮发动机速度表通常以涡轮最大转速的百分比来测量转速。

B涡轮发动机转速表通常以涡轮额定最大转速的百分比来测量转速。

C涡轮发动机速度计通常以涡轮转动的最大速度的百分比来衡量。

正确答案:A (备注:此答案有误)

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