问题
单项选择题 A1/A2型题
异烟肼与香草醛反应,干燥后测定其熔点为()
A.248~251℃
B.208~211℃
C.218~221℃
D.228~231℃
E.238~241℃
答案
参考答案:D
解析:异烟肼与香草醛反应,干燥后测定其熔点为228℃~231℃。
异烟肼与香草醛反应,干燥后测定其熔点为()
A.248~251℃
B.208~211℃
C.218~221℃
D.228~231℃
E.238~241℃
参考答案:D
解析:异烟肼与香草醛反应,干燥后测定其熔点为228℃~231℃。
完形填空 | ||||
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