【简答题】The following table shows some results of a survey (调查)in which 800 Japanese school pupils were asked to give their impressions(印象)of their classroom teachers. The pupils’ impressions were found to di...
【简答题】The reference for the voltage and current at the terminal of a circuit element are as shown in Figure h.1. The values for V and I are 40V and -10A. Calculate the power at the terminals and state wheth...