问题
判断题
高效液相色谱法分析环境空气中苯胺类化合物时，为使采样管中的苯胺类化合物充分解析，用甲醇洗脱吸附苯胺的硅胶需轻微振荡一段时间以后，再用高效液相色谱分析。
答案
参考答案：对
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高效液相色谱法分析环境空气中苯胺类化合物时，为使采样管中的苯胺类化合物充分解析，用甲醇洗脱吸附苯胺的硅胶需轻微振荡一段时间以后，再用高效液相色谱分析。
参考答案：对
| 用所给单词的正确形式填空，每空只能用一次。 | |
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| In these years, computer games have been more and more 1 in many cities and towns. A lot of small 2 along busy 3 have changed into computer game houses in order to get more money. These places are always crowded with people especially young boys. In the computer game houses, people spend a lot of money 4 with the machines. It’s hard for one to win a computer, but can make progress( 进步)after 5 again and again. People have a kind of gambling psychology(赌博心理)when they play computer games. The more the lost, the 6 they want to win. For school boys, they have no time for their 7 . When class 8 , they run to the nearby computer game houses. Some of them can get enough money from their parents, but some of them are not 9 enough to get the money. A few of them begin to take away othe 10 money and become bad boys. |