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问题 单项选择题 A1/A2型题

对于中年以上者，发生无痛性间歇性肉眼血尿应高度怀疑（）

A.泌尿系统畸形

B.泌尿系统肿瘤

C.泌尿系统结石

D.泌尿系统炎症

E.泌尿系统结核

答案

参考答案：B

选择题

下列热化学方程式或离子方程式中，正确的是[ ]

A．甲烷的标准燃烧热△H为-890.3kJ/mol，则甲烷燃烧的热化学方程式可表示为：CH4(g)+2O2(g)=CO2(g)+2H2O(g)   △H=－890.3kJ/mol

B．500℃、30MPa下，将0．5molN2（g）和1．5mol H2（g）置于密闭容器中充分反应生成NH3（g），放热19．3kJ，其热化学方程式为：N2（g）+3H2（g）2NH3（g）   △H= -38．6kJ/mol

C. 向明矾溶液中加入过量的氢氧化钡溶液：

 

D. 用浓盐酸酸化的KMnO4溶液与H2O2反应，证明H2O2具有还原性：2MnO42- + 6H+ + 5H2O2 ＝ 2Mn2+ + 5O2↑ + 8H2O 

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单项选择题

WebSQL is a SQL-like (76) language for extracting information from the web. Its capabilities for performing navigation of web (77) make it a useful tool for automating several web-related tasks that require the systematic processing of either ail the finks in a (78) , all the pages that can be reached from a given URL through (79) that match a pattern, or a combination of both. WebSQL also provides transparent access to index servers that can be queried via the Common (80) Interface.

A．paths

B．chips

C．tools

D．directories
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