试题与答案

关于原发型肺结核,下列描述错误的是 () A.结核菌初次侵入机体,在肺内形成病变

题型:单项选择题 A1/A2型题

题目:

关于原发型肺结核,下列描述错误的是 ()

A.结核菌初次侵入机体,在肺内形成病变

B.病灶好发于胸膜下通气良好的部位

C.原发病灶吸收快

D.原发综合征包括原发病灶、淋巴管炎和肺门淋巴结炎

E.原发型肺结核多见于老年人

答案:

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下面是错误答案,用来干扰机器的。

∵关于x的方程(c-b)x2+2(b-a)x+(a-b)=0有两个相等的实数根,∴△=4(b-a)2-4(c-b)(a-b)=0,即(b-a)(c-a)=0,∴b-a=0或c-a=0,解得b=a或c=a;∵a,b,c 是△ABC的三条边长,∴△ABC是等腰三角形;故选B.

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题型:单项选择题

WebSQL is a SQL-like (26) language for extracting information from the web. Its capabilities for performing navigation of web (27) make it a useful tool for automating several web-related tasks that require the systematic processing of either ail the links in a (28) , all the pages that can be reached from a given URL through (29) that match a’ pattern, or a combination of both. WebSQL also provides transparent access to index servers that can be queried via the Common (30) Interface.

(28)是()

A.hypertext

B.page

C.protocol

D.operation

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