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问题 多项选择题

患者，男，28岁。被疑为疟疾，但第一次血涂片检查为阴性。为明确诊断可进行哪些检查（）

A.可反复做血涂片检查

B.行骨髓涂片检查

C.激发试验

D.免疫学诊断方法

E.基因诊断方法

答案

参考答案：A, B, C, D, E

单项选择题

毒性药品库是（）

A．1500M2 

B．1000M2 

C．500M2 

D．150M2 

E．50M2
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单项选择题

One of the difficulties in building an SQL-like query language for the Web is the absence of a database （） for this huge, heterogeneous repository of information. However, if we are interested in HTML documents only, we can construct a virtual schema from the implicit structure of these files. Thus, at the highest level of （） , every such document is identified by its Uniform Resource Locator (URL), has a （） and a text. Also, Web servers provide some additional information such as the type, length, and the last modification date of a document. So, for data mining purposes, we can consider the set of all HTML documents as a relation: Document(url, title, text, type, length, modif)Where all the （） are character strings. In this framework, an individual document is identified with a （） in this relation. Of course, if some optional information is missing from the HTML document, the associate fields will be left blank, but this is not uncommon in any database.

has a （） and a text

A．table

B．title

C． driver

D．event
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