第3题: [单项选择]Why can’’t Tom have the suit cleaned A. Because he is too busy. B. Because he has some work to do. C. Because he is working at his homework. D. Because he does not want to. 参考答案:C 答案解析:M: Tom, you ought to have that dress cleaned. It’’s too dirty.
W: But I’’m too busy with my school
第16题: [单项选择]发现汽水共腾时,应减弱燃烧,降低负荷,()并打开定期排污阀,改善给水质量直至恢复正常。 A. 关小主汽阀,打开蒸汽管道及过热器,全开连续排污阀 B. 打开主汽阀,关小蒸汽管道及过热器,全开连续排污阀 C. 关小主汽阀,全开蒸汽管道及过热器,打开连续排污阀 D. 打开主汽阀,全开蒸汽管道及过热器,关小连续排污阀 参考答案:A
第24题: [单项选择]The most important program on any computer is ______. A. Office 2000 B. Virus C. software D. Operating system 参考答案:D 答案解析:题目的大意是:计算机上最重要的软件是操作系统。Office 2000:微软公司的办公软件,Virus:病毒,software:软件,Operating system:操作系统。
第25题: [单项选择]局麻药液中加肾上腺素的主要目的是() A. 加快药物的作用 B. 有解毒作用 C. 延长麻醉效果 D. 防止休克 E. 减少麻药的浓度 参考答案:C