吹脱捕集—气相色谱法测定丙烯醛时，不同的吹脱时间和吹脱温度不_爱下问搜题

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问题判断题

吹脱捕集—气相色谱法测定丙烯醛时，不同的吹脱时间和吹脱温度不会对测定结果产生影响。

答案

参考答案：错

解析：不同的吹脱时间和吹脱温度会对丙烯醛的测定产生影响。

选择题

将0.1 L含有0.02mol CuSO₄和0.01molNaCl的水溶液用惰性电极电解。电解一段时间后，一个电极上得到0.01 mol Cu，另一电极析出的气体[ ]

A．只有Cl₂

B．既有Cl₂又有O₂

C．只有O₂

D．只有H₂

完形填空

My son was badly hurt in a fire. After he   36  from a series of treatments, the doctors told him they would not do any operation for six months   37  it took long for the skin to stop shrinking (收缩). So, he had to return to college with a visible 10-inch   38  on his face.
I said to my son, “Keaton,   39  will pay any more attention to your scar   40  you do. If it does not bother you, it will not bother   41 .” He took my advice to heart and returned to school with his head 42  high — glad he was alive.
43 , everyone has scars and shortcomings. Some of you may spend much time thinking that people would like you better,   44  you looked different, or dressed differently, or could have a different and newer   45 .
But you see, like Keaton’s scar, people will only judge you by your looks, or your   46 , or your car, if you are judging yourself by these same false   47 .
One of my friends in college was very   48 . At first, when people met him, they noticed his   49   for about 10 seconds. This man felt   50  about himself and spent most of his time   51  about other people’s comfort and welfare(幸福).   52 , people ignored his looks. What people   53  was his kindness and his concern for them. He didn’t act in an ugly way so people didn’t treat him as an ugly man.
Therefore, concentrate on what you value   54  yourself, because if you can see that beautiful person, everyone you are in contact with will see the same   55 .

B．In conclusion

B．expressions