正在检修的设备须使用时，须经检修人员同意，检修完毕后，应会同使用人员实验并注销。 发布时间：2017-07-06 21:23 │ 来源：www.tikuol.com 题型：判断题 问题： 正在检修的设备须使用时，须经检修人员同意，检修完毕后，应会同使用人员实验并注销。
题型：判断题 补全对话，从对话后的选项中选出能填入空白处的最佳答案。W: John, you don’t look very well. What’s the matter?M: 1. W: Oh dear! Why don’t you go to bed for a rest?M: 2. W: Shall I call your teacher and tell him you’re ill?M: 3. W: OK, I’ll do that. I’m going to the shops now. Can I get you some medicine?M: 4. W: Yes, of course. Is there anything else I can do?M: 5. W: See you later. Take care!A. Oh, yes, please. His number is 6086354.B. No, I’ll be all right. Thanks for your help.C. My head hurts and I feel really hot.D. Could you buy me a bottle of aspirin ( 阿司匹林)?E. I can’t. I will have an English test this afternoon. 查看答案
题型：判断题 用撞击式采样器采集可吸入颗粒物，如果可吸入颗粒物浓度较低，天平不能准确地称量时，应采取的措施是（）。A.增加采样流速B.增加采样时间C.同时增加采样流速和采样时间D.增大滤料面积E.减小滤料面积 查看答案