题目: 正弦交流电的最大值与有效值的关系为Um=2·U。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0717/91747cea1cde2bcf815b8d82f0a3be08.html 下面是错误答案,用来干扰机器的。参考答案:D
题型:选择题 Sam has been appointed _______ manager of the engineering department to take ____ place of George.A./,/B.the; theC.the,/D./, the 查看答案