根据《中华人民共和国招标投标法》规定，投标保证金最高不得超过人民币()万元。A．50

张某有一笔闲置资金欲进行投资，要求收益稳定，风险小，则其最佳投资方式为（）。

A.购买固定资产投资

B.购买已上市普通股股票投资

C.购买优先股股票投资

D.购买上市债券投资

集中式空调系统包括（）。

A、柜式空调器式系统

B、窗式空调器式系统

C、分体式空调器式系统

D、全空气式空调系统和空气一水式系统

一般把软件分为系统软件和应用软件。

二元合金相图表达了合金的哪些关系？

阅读理解。

1. According to the survey, people left alone on a desert island would most want their________.

A. MP3 player    

B. dog    

C. spouse/ partner    

D. celebrity

2. Which of the following is true about George Clooney?

A. He has been trained in wilderness survival.  

B. He may not be able to help you survive.

C. He does not think Roseane is beautiful.  

D. He is the choice of most South African women.

3. The survey results are analyzed in terms of the respondents' __________.

A. sex, age and nationality      

B. race, nationality and sex

C. marriage, age and race      

D. age, sex and marriage