Frequency is the reciprocal of the period, if the period is 4ms, then the frequency would be (). A.4m/s B.0.25KHz C.25Hz D.all of above

Frequency is the reciprocal of the period, if the period is 4ms, then the frequency would be ().
A.4m/s
B.0.25KHz
C.25Hz
D.all of above

出自：河南师范大学-计算机科学与技术-专业英语

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