以下货币政策工具中具有被动性特征的是( )。A．法定准备金制度 B．公开市场操作

Terry, who failed again and again in career (事业), often complained that he had been cheated by others. One day he told his wife he was so disappointed with the city       he had to leave.

It was the evening of       weekend when they moved to another city. Terry and his wife       (tidy) up their new home busily when the light suddenly went out. Terry was regretful to have forgotten bringing along candles and had to wait        (help) in a low mood. Just then he heard knocks on his door. Wondering who       was, Terry, a newcomer to this city, went to the door and opened it impatiently.       the door was a little girl, shyly asking whether he had candles. “No” Terry answered in anger and shut the door violently.

After a while, the girl knocked again.       this time she was holding two candles, saying, “My grandma told me the new neighbour downstairs might need candles. She sent me here to give you these.” Terry was very surprised by       he saw.

At that moment he suddenly realized what caused his       (repeat) failure in life. The person who had cheated him in life was really nobody else but       .

2005年5月22日，中国登山队员成功登上珠穆朗玛峰峰顶，开始对“边走边长”的珠峰重新测量“身高”．关于珠峰的叙述，正确的是（　　）

A．珠峰全部位于中国境内，“身高”固定不变

B．珠峰位于我国与南亚次大陆之间，是我国最南一列东西走向的山脉

C．珠峰是世界上海拔最高的山峰

D．珠峰“边走边长”，是因其位于亚欧板块和太平洋板块之间

未采用色谱学原理的系统是（）

A.高效液相色谱仪

B.二维高效液相色谱仪

C.毛细管电泳仪

D.均相酶免分析仪

E.气相色谱质谱联用仪

P2P实际的应用主要体现在以下几个方面（）

A.P2P分布式存储

B.计算能力的共享

C.P2P应用层组播

D.即时信息共享

氧气管道为什么要脱脂？