当混凝土的坍落度大于220mm时，如果用钢尺测量混凝土扩展后最终的最大直径和最小直径

患者，男，40岁。腰痠膝软，眩晕耳鸣，精神萎靡，性机能减退，并有遗精，早泄。其病因是

A．劳力过度

B．房劳过度

C．劳神过度

D．劳心过度

E．安逸过度

What happens to a teenage kid when the world he thought he knew suddenly changes? Find out in Little Brother by American author Cory Doctorow. It is a fascinating book for a new generation of sci-fi readers.

Marcus Yallow, 17, from San Francisco is much more comfortable in front of a computer than obeying the rules of society. Smart, fast and wise to the ways of the networked world, he has no trouble outwitting (骗过) his high school's monitoring system. This way he and his friends get to head off to play a popular online game in real life.

While they are playing, a bomb explodes on the Bay Bridge. Marcus stops a military (军队的) vehicle to get help for his injured friend, but this simple act throws him into a Department of Homeland Security (DHS) secret prison. There he is treated as a possible terrorist(恐怖分子). He is eventually let go after four days, but his injured friend disappears.

When he returns, Marcus discovers that there are many "security measures" in place and that now all citizens are treated like potential terrorists. While some consider this government action necessary for public safety, Marcus sees this as a complete destruction of the rights he is supposed to have as a citizen.

He knows that no one will believe his story, which leaves him with only one thing to do: to take down the DHS himself. He helps organize a large network called Xnet to spread the truth, anonymously (匿名地).

The book presents a young man who is irresponsible, but learns about himself, and grows, in the course of the story. As part of this learning and growing he becomes aware of very serious issues about his society.

小题1: What kind of article does this passage belong to?     

A．A fascinating story.

B．A book review.

C．News report

D．A TV programme小题2: Marcus Yallow was sent to prison because ________.        

A．he killed his friend

B．he bombed a military vehicle

C．he did something that a possible terrorist could do

D．his injured friend disappeared小题3: From the second paragraph we can infer that _________.     

A．Marcus Yallow is much more comfortable obeying the rules of society

B．Marcus Yallow is smart, fast and wise in real life

C．Marcus Yallow always plays online games in real life

D．Marcus Yallow is expert at the network world

加热器电源线铜丝截面积应大于或等于（）mm²

A、6

B、10

C、16

船舶碰撞进水后，应调整纵横倾以保持船舶的平衡，当使用（）方法时应特别谨慎。

A.排出法

B.移驳法

C.注入法

D.卸载法

期货市场技术分析方法是通过研究市场行为相关数据形成的图形、图表或指标系统进行分析，来预测期货价格的未来走势。其分析数据不包括（）。

A.期货持仓量

B.现货价格

C.期货交易量

D.期货价格