国际直接投资从不同角度可分为哪些类型。

多发性骨髓瘤患者的特征性血清蛋白电泳图谱为（）
肝硬化患者的特征性血清蛋白电泳图谱为（）
肾病综合征患者的特征性血清蛋白电泳图谱为（）

A.清蛋白↓↓，α₁N↑，α₂↑↑，β↑，γ↓N↑（N指正常，以下同）

B.清蛋白↓↓，α₁N↓，α₂N↓，β-γ↑

C.清蛋白↓，α₁↑，α₂↑，β，γN

D.在α～γ区带间出现M蛋白区带

E.清蛋白↓↓，α₁↑↓，α₂，β，γ↑

阅读理解。

     It is difficult for doctors to help a person with a damaged brain. Without enough blood, the brain lives

for only three to five minutes. More often the doctors can't fix the damage. Sometimes they are afraid to

try something to help because it is dangerous to work on the brain. The doctors might make the person

worse if he operates on the brain.

     Dr. Robert White, a famous professor and doctor, thinks he knows a way to help. He thinks doctors

should make the brain very cold. If it is very cold, the brain can live without blood for 30 minutes. This

gives the doctor a longer time to do something for the brain.

     Dr. White tried his idea on 13 monkeys. First he taught them to do different jobs, then he operated on

them. He made the monkeys' blood back to the monkeys' brains. When the brain's temperature was 10℃,

Dr. White stopped the blood to the brain. After 30 minutes he turned the blood back on. He warmed the

blood again. After their operations the monkeys were like they had been before. They were healthy and

busy. Each one could still do the jobs the doctor had taught them.

1. The biggest difficulty in operating on the damaged brain is that _____.

A. the time is too short for doctors

B. the patients are often too nervous

C. the damage is extremely hard to fix

D. the blood-cooling machine might break down

2. The brain operation was made possible mainly by _____.

A. taking the blood out of the brain

B. trying the operation on monkeys first

C. having the blood go through a machine

D. lowering the brain's temperature

3. With Dr. White's new idea, the operation on the damaged brain _____.

A. can last as long as 30 minutes

B. can keep the brain's blood warm

C. can keep the patient's brain healthy

D. can help monkeys do different jobs

4. What is the right order of the steps in the operations?

    a. send the cooled back to the brain

    b. stop the blood to the brain

    c. have the blood cooled down

    d. operate on the brain

A. a, b, c, d

B. c, a, b, d

C. c, b, d, a

D. b, c, d, a

行政组织中上下级层级关系是一种（）的分配关系。

A.任务和职位

B.权力和利益

C.权力和责任

D.责任和义务

安全的威胁可分为两大类，即主动攻击和被动攻击。通过截取以前的合法记录稍后重新加入一个连接，叫做重放攻击。为防止这种情况，可以采用的办法是 (1) 。一个计算机系统被认为是可信任的，主要从其受保护的程度而言的，WindowsNT4.0以上版本目前具有的安全等级是 (2) 。

2（）

A．D级

B．C1级

C．C2级

D．B级

作为一种消费态势，感性消费的本质在于（）

A.物质资料的丰富

B.科学技术的进步

C.商品附加值的提高

D.人与自然关系的改变