题目: 非圆形管的水力当量直径是如何定义的?能否按uπde2¬/4计算流量? 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/0831/2e9e7f15bb166bc9cfabca565b33504b.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 — do you eat vegetable?—Every day. [ ]A. How long B. How oftenC. How many times D. How much 查看答案