皮皮学，免费搜题
登录
搜题
【简答题】
旋风除尘的锥底处于()(选填负压或正压)状态,因此必须保证灰斗的()。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】用括号内所给动词的适当形式填空 1. I am sorry ___________ (hear) that your mother was ill yesterday. 2. After finishing ___________ (do) her homework, Lucy went out. 3. If it ___________ (rain) tomorrow, he won't go ...
【简答题】A．No, I don't think so. B．Yes, he's very well. C．Yes, he was there yesterday. D．No, I was ill yesterday.
【判断题】祖母绿琢型属于典型的阶梯式款式,即主要由阶梯状的平行反光小面组成,其特点是有利于增加宝石浓艳鲜亮的色彩,因而常用于琢磨色彩鲜艳、透明度好的宝石材料。
A.
正确
B.
错误
相关题目：