The function of the video distributor is one channel of video input and multiple channels of video output, with the functions of impedance matching and signal amplification. ( ) A: 正确 B: 错误

In<br/>the hybrid equivalent model, hfe<br/>is the expression for __()()____. A: input impedance B: voltage feedback ratio C: small-signal current gain D: output admittance

Given the self impedance at the fault location and the split coefficient of a certain power source to the fault location, the transfer impedance from the power source to the fault location should be ( ). A: self impedance times the split coefficient B: self impedance dividedby the split coefficient C: uncertain

Given this configuration determine the input impedance if VS

下面语句段的输出结果是什么? ( ) int i = 9; switch (i) { default: System.out.println("default"); case 0: System.out.println("zero"); break; case 1: System.out.println("one"); case 2: System.out.println("two");} A: default B: default, zero C: error default clause not defined D: no output displayed