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【简答题】
称取盐酸利多卡因供试品0.2058g,溶解于冰醋酸,加醋酸汞消除干扰,用非水碱量法测定,消耗高氯酸滴定液( 0.1010 mol/L )7.56ml,已知每 1ml 高氯酸 ( 0.1mol/L )相当于 27.08 mg 的 盐酸利多卡因 。计算 盐酸利多卡因 的含量。
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皮皮学刷刷变学霸
举一反三
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【单选题】What's the main idea of the passage?
A.
Online advertising is more effective than TV advertising.
B.
Google and Yahoo! are challenging Microsoft in the field of advertising.
C.
Google's new advertising service could make the internet an even more valuable marketing medium.
D.
Online advertising is popular with advertisers.
【简答题】使用SQL语句创建登录名及为用户赋予权限,有哪三步?
【单选题】What's the main idea of the passage?
A.
online advertising is more effective than TV advertising.
B.
Google and Yahoo! are challenging Microsoft in the field of advertising.
C.
Google's new advertising service could make the internet an even more valuable marketing medium.
D.
online advertising is popular with advertisers.
【单选题】The un-verb can be found in the following EXCEPT ______.
A.
online
B.
on cellphone
C.
in advertising
D.
in broadcasting
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