第36题: [单项选择]The primary aim of some companies' sponsoring the search engines is to______. A. cash in on their important role as Web guides B. boost their avenue C. reverse a series of losses D. have their sites visited by the Internet users more 参考答案:D 答案解析:从文章的最后一句“To boost revenue，search engines in the past year have been accepting payments from business
第37题: [单项选择]混凝土小型空心砌块砌体的水平灰缝砂浆饱满度按净面积计算不得低于：(2011，2) A. 50％ B. 70％ C. 80％ D. 90％ 参考答案:D 答案解析:[说明] 参见《砌体结构工程施工质量验收规范》(GB 50203—2011)。
6．2．2砌体水平灰缝和竖向灰缝的砂浆饱满度，按净面积计算不得低于90％。
