太阳活动产生的短波辐射和粒子流干扰地球电离层产生了磁暴现象,影响了无线电短波通信

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问题:

太阳活动产生的短波辐射和粒子流干扰地球电离层产生了磁暴现象,影响了无线电短波通信。

考点:太阳活动对地球的影响太阳辐射对地球的影响
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宴会厅的室温,一般冬季保持在()之间,夏季保持在()之间。

A.18℃-20℃,22℃-24℃

B.18℃-20℃,20℃-22℃

C.22℃-24℃,18℃-20℃

D.20℃-22℃,18℃-20℃

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      Young athletes from around the world will soon get their chance at Olympic gold. The International

Olympic Committee ( IOC ) voted Thursday to host the first-ever Youth Olympics.

     The Summer Games are planned to stage in August of 2010. The 12-day competition will feature

3,200 kids between the ages of 14 and 18. The Winter Games will be held in 2012 and are expected to

attract 1,000 athletes. Both games will take place every four years.

     Seeing the rise in childhood fatness, IOC president Jacques Rogge said he hopes the competitions will encourage young people to get off the couch and get into shape. Rogge also admitted that the IOC is

looking to pull in a younger television audience to the Olympics.

      In recent years, interest in the games among young people has fallen, with the average age of Olympic viewers on the rise. Rogge admitted that kids today are more interested in flashier( 浮华的 ) athletic

sports like the X Games, which stand for such sports as BMX freestyle, surfing, and Moto X Racing.

      The Olympics have tried to keep up with the competition by adding BMX-cross cycling, ski cross,

and snowboarding to the program. And the IOC is hoping to strengthen its fame among teens by adding

skateboarding in the 2012 London Olympics.

      The Youth Olympics are the IOC's latest attempt to draw the attention of young viewers. "Just as the

IOC has known, over our 100-plus years of living, how to move with the times---so we must now adapt

to meet the taste of today's young generation," he said.

1. According to the passage, the third Winter Youth Olympics will be held ______        

A.  in 2012    

B.  in 2016    

C.  in 2020      

D. in 2018

2. The aim of the Youth Olympics is to __________.

A. encourage young people to exercise more

B. meet the needs of some schools and parents

C. develop students' sense of competition

D. stress the importance of the Olympics

3. Which of the following is NOT mentioned in the passage ?

A. When the Winter Youth Olympics will be held.

B. Where the Summer Youth Olympics will be held.

C. How long the Summer Youth Olympics will last.

D. When the Summer Youth Olympics will be held

4. The Summer Youth Olympics are the following except___________.

A. going to be held in London in August of 2012

B. planned to stage in August of 2010

C. going to be held every four years from August of 2010

D. the IOC's latest attempt to draw the attention of young viewers

题型:选择题

肝血窦的特点包括()。

A.内皮细胞无孔,有基膜

B.内皮细胞有孔,无基膜

C.内皮细胞无孔,无基膜

D.内皮细胞有孔,有基膜

E.以上均不是

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电动机安装、接线完毕后,进行试车时的注意事项。

题型:选择题

下列关于项目管理层次与跨度的表述中,正确的是( )。

A.同一类型项目的管理层次应当一样

B.管理者所管理的组织机构职能相似性越小,管理幅度越大

C.管理跨度的设置与领导者的能力直接相关

D.管理层次越多信息越通畅

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