张力性气胸急救A．面罩吸氧B．加压包扎C．胸外按摩D．粗针头排气E．气管插管

一列横波在x轴上沿正方向传播，A、B为x轴上相距为20 m两点，A在波峰时，B恰在平衡位置，经过Dt=5s，且 T<Dt<2T，A在波谷，B仍在平衡位置，

求：（1）波长l；（2）周期T ；（3）可能的波速

The World Trade Organization is additionally to cooperate with the International Monetary Fund and( )in order to achieve greater coherence in global economic policy making．

A．the Central Bank of China

B．the World Bank

C．World Health Organization

D．the International Development Association

完成下列句子的同义表达

1. John is better at playing football than Peter.

    John __________ __________ __________ playing football than Peter.

2. Why don't you ask our English teacher for help?

    __________ __________ __________ our English teacher for help?

3. Yes, I agree.

    Yes, I have __________ __________ idea __________ you.

4. Betty's mum doesn't think that today people eat as well as in the past.

    Betty's mum thinks that today people eat __________ __________ in the past.

5. Now we don't have as much free time as we did before.

    Now we have __________ __________ __________ than we did before.

—What was your impression of last night's lecture
—Speaking（）, I thought it was rather boring.

A. very

B. honest

C. really

D. honestly

在C/S 体系结构中，客户端执行的操作是（ ）。

A．触发器

B．嵌入式SQL

C．存储过程

D．扩展存储过程