题型:问答题 简答题 Last week I took the Civil Service Admission Examination, for which I _____ for nearly three months.A.had preparedB.would prepareC.was preparingD.have been preparing 查看答案
题型:问答题 简答题 如图所示电路中,电源电压保持不变,闭合开关S,已知当滑片P分别滑至a端和b端时,电阻R1消耗的电功率之比P1:P2=9:4;当滑片在a端时,电流表的示数为3A,滑片P在b端时,电压表的示数为6V,求:(1)电阻R1的阻值和滑动变阻器的最大阻值R2;(2)电源电压. 查看答案
题型:问答题 简答题 下面有一段程序代码,如果从键盘上输入“Computer”,则在文本框内显示的内容是( )。 Private Sub Text1_KeyPress(KeyAscii As Integer) If KeyAsai >=65 And KeyAsai<=122 Then KeyAscii=42 End If End SubA) Computer B) 什么都没有 C) ******** D)程序出错 查看答案