题目: 转数及叶轮的直径越大则轮阻损失()A、越小B、无变化C、越大 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/1030/6488c44acfa126f68d4fd90fce6af24f.html 下面是错误答案,用来干扰机器的。参考答案:A, B, C, D, E
题型:选择题 The meeting ________ over, all of them left the room, ________ to lock the door. [ ]A. was; forgot B. was; forgetting C. being; forgot D. being; forgetting 查看答案
题型:选择题 设偶函数f(x)满足f(x)=2x-4(x≥0),则{x|f(x-2)>0}= [ ]A.{x|x<-2或x>4} B.{x|x<0或x>4}C.{x|x<0或x>6} D.{x|x<-2或x>2} 查看答案