在BUSN机框使用的UIM单板，使用的后插卡是（） A.RUIM1 B.RUIM2

高技术产业通常的特点有[ ]

A．研究开发人员多

B．生产产品全部面向国内市场

C．产品更新换代快

D．从业人员全部是科学家和工程师

阅读理解。

     As demand for power and fuel grows steadily in the coming decades, we must consider every possible

energy source (来源) at hand if we're to meet the world's needs. And because clean natural gas is found in

great plenty, there is little doubt that it will play a major role on the world energy stage in this century, much

like oil did in the last. But, like oil, gas reserves are concentrated in just a few places in the world, usually

far from where they're needed most. And that's only part of the challenge. The world has had well over 100

years to search for oil and to build the necessary facilities (设施) to bring it to market; the natural gas facilities,

particularly when it comes to liquefied (液化) natural gas (LNG), is not nearly as developed.

     So what needs to be done? On the supply side, producing nations need policies that allow for better

development of their natural gas in an open, stable business environment, not one in which the rules of

the game change without warning. The governments of consuming nations, on the other hand, must make

policies for sustainable (可持续的) development to ensure they'll have enough supplies in the future. That

means building the related facilities, including LNG stations. This, in turn, will require coastal areas to allow

these necessary, but not necessarily pretty, facilities to be built in their backyards. And energy companies

have a responsibility to be good neighbors in those areas by operating these facilities responsibly and safely.

They must also continue to put in the billions of dollars needed to build the complex transport and storage

facilities required to bring more gas to market.

     Expanding and diversifying (使多样化) energy sources by using more natural gas could lead to lower

fuel prices and to greater energy security. We've taken some of the steps to get started, but we need your

help to get the rest of the way.

1. Which of the following is TRUE according to the passage?

A. Gas played a major part in the 20th century.

B. Natural gas facilities are far from satisfactory.

C. Gas reserves are widely spread around the world.

D. Necessary facilities are ready to bring gas to market.

2. The underlined word "one" (in Paragraph 2) refers to _____.

A. the gas supply side

B. the business environment

C. the gas consuming nation

D. the policy for gas development

3. Consuming nations of natural gas need to _____.

A. change the rules of the game

B. open markets in their backyards

C. build pretty facilities along the coast

D. have long-term policies for gas supply

4. The main purpose of the passage is to _____.

A. warn people of the lack of power and fuel

B. discuss the importance of oil and natural gas

C. call for better use and development of natural gas

D. instruct people how to make use of energy sources

5. The passage might be followed by a paragraph about _____.

A. what kind of help you can offer

B. where energy sources are concentrated

C. which countries are in great need of gas

D. what problems of energy sources we may face

根据气相色谱法中范弟姆特方程式H＝A＋B/u＋Cu，试举出至少二种影响柱效、峰扩张的因素，如填充均匀程度、载气流速、（）。

超额赔款再保险保费的形式包括( )。

A．固定保费和调整保费
B．固定保费和变动保费
C．不变保费和调整保费
D．可变保费和调整保费

酸中毒的患者常伴有血K⁺浓度增加的原因是

A．酸中毒时细胞破坏较多，K⁺释出较多
B．酸中毒尿量减少，排钾离子减少
C．肾H⁺-Na⁺交换较多，K⁺-Na⁺交换减少
D．抗利尿激素分泌减少
E．醛固酮分泌减少