阻塞性肺气肿最主要的症状是___________，肺功能检查时_______明显增加

在一定温度下，可逆反应达到平衡状态的标志是[ ]

A．C生成的速率与C分解的速率相等

B．单位时间生成nmol A，同时生成3n mol B

C．A，B，C的浓度不再变化

D．A，B，C的分子数比为1:3:2

截至北京时间2011年3月2日23时10分，在利比亚的我国掌握并有回国意愿的中国公民已全部撤出，共计    35860人。胡 * * * * 、温 * * * * 一直牵挂着在利比亚的同胞的安危，在第一时间作出重要指示和批示。在撤离行动中，中方履行人道主义义务，在力所能及的情况下帮助12个国家撤出了约2100名外籍公民。上述材料说明[ ]

①中 * * 党坚持全心全意为人民服务的宗旨

②我国奉行独立自主的和平外交政策

③中国政府坚持立党为公，执政为民

④只有社会主义国家背履行人道主义义务

A、①③

B、①②

C、①④

D、②③

下列说法中，对G-1503/1504T2进料泵没有危害的是（）

A、出口压力高

B、入口压力高

C、出口流量大

D、入口流量大

Who won the World Cup 1994 football game What happened at the United Nations How did the critics like the new play (1) an event takes place, newspapers are on the streets (2) the details. Wherever anything happens in the world, reporters are on the spot to (3) the news.
Newspapers have one basic (4) , to get the news as quickly as possible from its source, from those who make it to those who want to (5) it.
Radio, telegraph, television, and (6) inventions brought competition for newspaper. So did the development of magazines and other means of communication. (7) , this competition merely spurred the newspapers on. They quickly made use of the newer and faster means of communication to improve the (8) and thus the efficiency of their own operations. Today more newspapers are (9) and read than ever before. Competition also led newspapers to branch out into many other fields. Besides keeping readers (10) of the latest news, today’s newspapers (11) and influence readers about politics and other important and serious matters. Newspapers influence readers’ economic choices (12) advertising. Most newspapers depend on advertising for very (13) .
Newspapers are sold at a price that (14) even a small fraction of the cost of production. The main (15) of income for most newspapers is commercial advertising. The (16) in selling advertising depends on a newspaper’s value to advertisers. This (17) in terms of circulation. How many people read the newspaper
Circulation depends (18) on the work of the circulation department and on the services or entertainment (19) in a newspaper’s pages. But for the most part, circulation depends on a newspaper’s value to readers as a source of information (20) the community, city, county, state, nation, and world—and even outer space.

[A] forms[B] existence [C] contents [D] purpose

用摇臂钻加工孔时，为了保证相邻两孔的孔距，最好的工艺方法是（）。

A、先钻第一孔，移到位后再钻第二孔

B、分别用小钻头钻出两个孔，检查孔距后再用合格直径钻头扩孔

C、用小钻头钻第一孔，并扩孔接近要求值；再用小钻头钻第二孔，扩孔；检查孔距，调整位置后扩孔到要求尺寸

D、划线定好两孔中心位置，并打中心孔，用钻头先后钻两孔即可