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【简答题】
选词填空 in;into;up;through;out She needs time to grow _______ the new working environment. Even when facing difficulties, she never gave ______. Very few people dare go _______ on stormy nights. He is going ________ a very difficult time, so we should help him. ______ his mother’s eyes, the boy can do nothing bad.
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【简答题】六淫之邪多从______、______侵犯人体而发病。
【单选题】用EDTA测定Ag+时,一般采用置换滴定方法,其主要原因是()。
A.
Ag与EDTA的配合物不稳定(lgKAgY=7.32)
B.
Ag+与EDTA配合反应速率慢
C.
改善指示剂指示滴定终点的敏锐性
D.
Ag+易水解