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【单选题】
当药物分子具有下列基团时，在酸性溶液中可以直接用亚硝酸钠溶液滴定()A.
硝基
B.
酚羟基
C.
芳伯氨基
D.
芳酰氨基
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皮皮学刷刷变学霸
举一反三
【判断题】Indoor billboards are large structures located near transportation points intending to attract the interest of people traveling on roads or public transportation.
A.
正确
B.
错误
【简答题】注射成型工艺过程主要有成型前的 ___________ 、 ___________ 过和塑件的 ___________ 。
【判断题】Indoor billboards are large structures located near transportation points intending to attract the interest of people traveling on roads or public transportation.
A.
正确
B.
错误
【单选题】Traditional linguists believed that the written form of language was ______ to the spoken form.
A.
superior
B.
equal
C.
inferior
D.
irrelevant
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