问题
问答题 简答题
光学甲烷检测仪零点漂移的原因是什么?
答案
参考答案:
(1)仪器空气室内空气不新鲜;
(2)对零地点与测定地点温度和气压不相同;
(3)瓦斯气路不畅通。
光学甲烷检测仪零点漂移的原因是什么?
参考答案:
(1)仪器空气室内空气不新鲜;
(2)对零地点与测定地点温度和气压不相同;
(3)瓦斯气路不畅通。
每年高考之前总会出现“高考移民”,他们设法到录取分数线较低的省份参加考试。你班同学就此展开讨论,提出了以下两种相反意见:
说明:(1).词数100左右; (2).标题和开头段已经给出。 Students on the Move for Their Exams—Fair or Unfair? Every year some students from high-score areas move to other provinces to take the Entrance Examination of the Colleges. Recently we had a discussion about this. ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ |