问题
判断题
根据《城市生活垃圾全磷的测定偏钼酸铵分光光度法))(CJ/T104-1999)测定城市生活垃圾中全磷时,样品应采用碱熔的方式来进行前处理。
答案
参考答案:错
解析:样品用硫酸-高氯酸消煮的方式来进行前处理。
根据《城市生活垃圾全磷的测定偏钼酸铵分光光度法))(CJ/T104-1999)测定城市生活垃圾中全磷时,样品应采用碱熔的方式来进行前处理。
参考答案:错
解析:样品用硫酸-高氯酸消煮的方式来进行前处理。
完形填空。 | ||||
We are middle school 1____________. We are 2____________ Grade 7. Kate, Mike, Lucy 3____________ I are in Class One. Kate 4____________ eleven. Mike and Lucy are twelve. I am thirteen. We have a new 5____________. In it you can 6____________ 40 desks and chairs. A blackboard, a clock and a map are on the wall. The map is a 7____________ China. 8____________ brooms are behind the door. On a desk you can see some pens. The red 9____________ is Kate's. Look at the clock. It's four o'clock. It's time 10____________ play games.
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