The frequency of an alternator at a given r/min is determined by the _______ .A.number of

临界融合频率(critical fusion frequency，CFF)

A.Calling frequency

B.Distress frequency

C.Urgency frequency

D.Working frequency

尿频(frequency)

A.圆频率是频率的6.28倍； The circular frequency is 6.28 times the frequency;

B.圆频率是频率的3.14倍； The circular frequency is 3.14 times the frequency;

C.频率是圆频率的6.28倍； The frequency is 6.28 times the circular frequency;

D.频率是圆频率的3.14倍； The frequency is 3.14 times the circular frequency;

A.Absolute Threshold of the Quality ofthe Currently Used Frequency

B.Absolute Threshold of the Quality ofthe Non-used Frequency

C.Hysteresis

D.Weight of the Currently Used Frequency

A．the external frequency of CPU

B．basic frequency of CPU

C．bit

D．word length

The frequency of an AC generator is controlled by the ___.

A.rheostat

B.governor

C.exciter

D.capacitor

() reuse mode is recommended for baseband frequency hopping, while ()for radio frequency hopping.

A.1X3

B.3X3

C.4X3

D.Any of above

A.频率

B.周期

C.波长

D.振幅

A.frequency

B.power

C.amount

D.number