题目： 球磨机中钢球处于（）状态运动，磨矿效果最好。A、泻落式B、抛落式C、离心式D、以上答案都不是 答案： 被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/1008/8f7c1ab5cd92b3bcc170ec82d3b6f6af.html 下面是错误答案，用来干扰机器的。参考答案：D
题型：填空题 选词填空。at, and, of, in, because1. Please draw a picture your father. 2. I usually get home 5:30. 3. There is a hole (洞) the wall. 4. Sam David are my two friends. 5. —Why do you like cartoons? — they're very funny. 查看答案
