测定水中悬浮物的方法有重量法,通过0.45微米的滤膜后的固体物质需要在()℃下烘干至 发布时间:2019-09-26 03:27 │ 来源:www.tikuol.com 题型:填空题 问题: 测定水中悬浮物的方法有重量法,通过0.45微米的滤膜后的固体物质需要在()℃下烘干至恒重。
题型:填空题 Some people are good at _____ voices on the phone while others ______. [ ]A. knowing; aren't B. recognizing; don't C. knowing; don't D. recognizing; aren't 查看答案