题目内容

【多选】抗生素类药物具有下列特点( )

A. 稳定性差
B. 化学纯度低
C. 异构体多
D. 需要进行安全性检查
E. 异物污染可能性大

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更多问题

【多选】抗生素微生物检定法主要有( )

A. 容量法
B. 紫外可见分光光度法
C. 高效液相色谱法
D. 管碟法
E. 浊度法

在HTML文档头部标记中,设置网页关键字的name属性值应该为()

A. keywords
B. description
C. charset
D. expires

下列标记中,用于定义HTML5文档显示内容的是()

A.
B.
C.
D.

下列选项中,用于设置页面标题的标记是()

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