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【多选题】
以下情况产生的误差属于系统误差的是A.
在重量分析中沉淀的溶解损失
B.
滴定管读数时，最后一位估计不准
C.
过滤时出现穿滤
D.
天平零点稍有变动
E.
滴定分析中，滴定终点和化学计量点不一致
F.
试剂中含有微量待测组分
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【简答题】用适当的连接词完成下列短文,然后朗读或背诵,在语境中体会名词性从句连接词的用法。 I am going to tell you __ 1 __ happened in my restaurant today. This afternoon a poorly-dressed gentleman came into my restaurant. Nobody knew __ 2 __ he was. ...
【单选题】Today he was able to his message exclusively on the economy.
A.
focus
B.
respond
C.
involve
D.
adopt
【简答题】Read the following short passage and choose the best answer. There was a large degree of male chauvinism in ancient Chinese society. Even the earliest Chinese poetry book (Book of Odes) tended to favo...
【简答题】Marco Polo was from Venice, Italy. In 1271, at age 17, Marco went on a trip with his father and uncle to China. Today people often travel to different places around the world. But it was very hard for...
【单选题】Today he was able to his message exclusively on the economy.
A.
focus
B.
research
C.
deal
【简答题】语法填空 I am going to tell you 4 1 unbelievable thing that happened in my restaurant today. This afternoon a poorly 4 2 (dress) gentleman came into my restaurant. Nobody knew 4 3 he was. After sit...
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