某小区要建一个下沉式花坛,这个花坛的底面半径为10米,下沉(花坛底面至地面的距离

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问题:

某小区要建一个下沉式花坛,这个花坛的底面半径为10米,下沉(花坛底面至地面的距离)1米。   

(1)这个花坛的占地面积是多少平方米?

(2)建这个花坛共挖土多少立方米?   

(3)在花坛的侧面和底面抹一层水泥,抹水泥的面积是多少平方米? 

考点:圆柱的体积圆柱的表面积
题型:解答题

阅读理解。

     John Smith doesn't play sports. He has two 5 children. His son, Jim, likes tennis and soccer ball. And

he has a sports collection. 2 He is in the school tennis club. 3 He plays tennis with (和) his friends every day.

Cindy, his daughter, likes baseball and tennis. 4 She only watches them on TV.

1. 写出文中喜欢球类运动的人物: 

    ________________________________ 

2. 将画线句子“He is in the school tennis club.” 翻译成汉语:

    ________________________________

3. 写出画线句子“He plays tennis with his friends every day.” 的同义句:

    ________________________________

4. 下面哪一项能填入文中空白处,使文意通顺连贯:

   A. She plays them every day. B. But she doesn't play them. 

5. 根据上下文,猜测画线单词“children” 的含义: 

    ________________________________

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站在百米跑道终点计时台上的甲、乙两名计时员,为同一跑道的运动员计时,甲看到起跑发令枪冒烟时开始计时,而乙则听到发令枪声才开始计时,则:

(1)甲、乙两名计时员谁计时准确?

(2)若甲、乙两名计时员的反应速度相同,他们计时相差大约是多少?( 声音在空气中的传播速度为V=340m/s)

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2008版IS09001要求组织编制的质量手册至少应包括()等内容。

A.质量管理体系所覆盖的范围

B.组织结构图

C.标准所要求的形成文件的程序或对其引用

D.各过程之间的相互作用的表述

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欧亚主义者主张与谁合作?()

A.无产阶级 * *

B.君主立宪制

C.苏维埃 * *

D.君主专制

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心理障碍是可以通过各种努力来进行预防和调适,从而达到心理健康。

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