写实验室用一种暗紫色固体制取氧气的化学方程式 ； 该反应的基本反应类型是。

当政府的购买性支出增加时，对经济产生的影响是( )。

A．市场价格水平下降

B．企业利润率下降

C．所需生产资料增多

D．生产紧缩

对项目决策的后评价包括( )。

A．项目决策程序的分析

B．投资决策内容的分析与评价

C．决策方法的分析与评价

D．项目评估方法的分析与评价

E．项目设计水平的分析与评价

轮对厂修时，车轮轮毂长度小于170MM，须（）。

A.退轮检查

B.更换车轴

C.更换车轮

D.加工修理

企业提高市场占有率时不必考虑的因素是（）。

A.引起反垄断活动的可能性

B.争夺市场占有率时所采用的市场营销组合战略

C.市场占有率与投资收益率之间的关系

D.为提高市场占有率所付出的成本

The investment-banking department of the XYZ Brokerage House often has information that would be of significant use to the firm’s brokerage clients. In order to conform to CFA Institute Standards of Professional Conduct, which of the following policies should XYZ adopt According to Standard:（）

A. Ⅱ (A), Material Nonpublic Information, XYZ should encourage their investment banking clients to publicly disseminate this information. 

B. Ⅲ (B), Fair Dealing, all clients should be informed of the information at the same time. 

C. Ⅱ (A), Material Nonpublic Information, XYZ should establish physical and informational barriers within the firm to prevent the exchange of information between the investment banking and the brokerage operations.