题型:名词解释 The beautiful mountain village we spent our holiday last year is located in ____________is now part of Hefei.A.which; whereB.where; whatC.that; whatD.when; which 查看答案
题型:名词解释 电位的计算实质上是电压的计算。下列说法正确的有()。A.电阻两端的电位是固定值B.电压源两端的电位差由其自身确定C.电流源两端的电位差由电流源之外的电路决定D.电位是一个相对量 查看答案