集成度与线宽有对应关系,即集成度越高,线宽越小,所以,线宽也常用来表示集成电路制度技

题型:判断题

问题:

集成度与线宽有对应关系,即集成度越高,线宽越小,所以,线宽也常用来表示集成电路制度技术水平的高低。

考点:科普知识竞赛大学科普知识大学科普知识题库
题型:判断题

阅读理解。

      One morning Mr and Mrs Brown get up very early. After they have breakfast, they go shopping at seven

thirty. They get to the shop at seven fifty. In the shop they see a lot of clothes. Mrs Brown likes them. So she

buys a shirt for her son, a skirt for her daughter, and a sweater for Mr Brown. She buys a blouse for herself,

too. 

      The shopping bag is full now. Mr Brown looks at his watch. Then he says, "Oh, it's twelve o'clock. I

think we must go home now. It's quite late." So they go out of the shop and begin to go home, but they lose

their way. 

       Mr Brown drives along the street. He can't find the way. Then he drives over to an old man and asks,

"Excuse me. Where am I?" 

      The old man looks at him and their car. "You're in your car, sir." he says.

1. Mr and Mrs Brown go shopping _______. [ ]

A. by bus

B. by bike

C. on foot

D. by car

2. They buy some _______ in the shop. [ ]

A. food

B. drink

C. clothes

D. cars

3. They are in the shop for about _______. [ ]

A. ten minutes

B. four hours and a half

C. four hours and ten minutes

D. five hours

4. In the story "lose their way" means _______. [ ]

A. 迷路

B. 问路

C. 没有办法

D. 按原路

5. Does the old man help them? [ ]

A. Yes, he does.

B. No, he doesn't.

C. I think so.

D. We don't know.

题型:判断题

标志着中国近代史开端的历史事件是[ ]

A.鸦片战争

B.第二次鸦片战争

C.甲午中日战争

D.八国联军侵华战争

题型:判断题

治消化性溃疡时,制酸剂可与何方同用

A.人参汤
B.六君子汤
C.小青龙汤
D.半夏泻心汤
E.小柴胡汤

题型:判断题

两个牙在牙根发育完成以后发生粘连,称为()

A.融合牙

B.双生牙

C.结合牙

D.牙内陷

E.牙中牙

题型:判断题

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2010年,我国共投入研究与试验发展(R&D,以下简称R&D)经费7062.6亿元,比上年增长21.7%;R&D经费投入强度(与国内生产总值之比)为1.76%,比上年的1.70%有所提高。
分活动类型看,全国用于基础研究的经费投入为324.5亿元,比上年增长20.1%;应用研究经费893.8亿元,增长22.3%;试验发展经费5844.3亿元,增长21.7%。
分执行部门看,各类企业投入R&D经费5185.5亿元,比上年增长22.1%;政府属研究机构投入1186.4亿元,增长19.1%;高等学校投入597.3亿元,增长27.6%。企业、政府属研究机构、高等学校经费所占比重分别为73.4%、16.8%和8.5%。
分产业部门看,R&D经费投入强度(与主营业务收入之比)最高的行业是专用设备制造业,为2.04%;投入强度在1.5%~2%的有4个行业,分别是医药制造业(1.82%)、通用设备制造业(1.59%)、电气机械及器材制造业(1.59%)和仪器仪表及文化、办公用机械制造业(1.50%)。
分地区看,R&D经费超过300亿元的有江苏、北京、广东、山东、浙江和上海6个省(市),共投入经费4130.5亿元,占全国经费投入总量的58.6%。R&D经费投入强度(与地区生产总值之比)达到或超过全国水平的有北京、上海、天津、陕西、江苏、浙江和广东7个省(市)。

分地区看,2010年R&D经费超过300亿元且R&D经费投入强度达到或超过全国水平的省(市)有( )。

A.6个
B.5个
C.4个
D.3个

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