反映总肺泡通气量变化的最佳指标是（） A.潮气量 B.pH C.A-aDO2

糖类、脂质、蛋白质、核酸共有的元素是[ ]

A．C、H、O、N、P

B．C、H、O、N

C．C、H、O

D．O、H

试题五（18分）阅读下列说明，回答问题1至问题4,将解答或相应的编号填入答题纸的对应栏内。【说明】性能测试在系统质量保证中起重要作用。某项目组对一个电子政务平台系统执行了负载压力性能测试，重点评估其效率质量特性中的时间特性和资源利用性两个质量子特性。性能需求可以概括为：业务成功率达到100﹪；响应时间在8秒之内；服务器资源利用合理。测试环境逻辑部署图如下图。

【问题4】（5分）如60用户并发执行“新立申请”业务的成功率为80％，应用服务器内存页交换速率为2000page in/s，数据库服务器CPU平均占用率达到100%。请说明该业务的性能是否满足需求。假设系统中间件和数据库软件配置正确，请指出系统可能存在的性能瓶颈？

Dan is the managing director of Ace Pte Ltd. He entered into a contract on behalf of the company to buy a shophouse in a prime location in the city centre for a rather high price of $4 m. The other directors were not happy with Dan’s action because the price was too high and they felt it was not a good time to buy property. In addition, Article 58 of the articles of association of the company, states:‘The managing director shall have authority to enter into, on behalf of the company, agreements for the purchase of property provided that the purchase price per agreement shall not exceed $500,000. Where the purchase price of a proposed agreement exceeds $500,000, the prior approval of the board of directors is required.’Required:Advise whether Ace Pte Ltd is bound by the purchase agreement. (10 marks)

在保险合同中通常订有，在发生保险事故时，由被保险人自己承担一小部分损失的条款。这一条款被称为（）

A.限额条款

B.共保条款

C.免赔条款

D.责任条款

红黏土是碳酸盐岩经红土化作用形成的，其液限一般等于或大于（）。

A.20％

B.30％

C.40％

D.50％