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如图是某一立体图形的三视图,则这个立体图形是( ) A.正三棱柱 B.三棱锥 C...
如图是某一立体图形的三视图,则这个立体图形是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101190154782171165/SYS201311011901547821711005_ST/images0.png)
A.正三棱柱
B.三棱锥
C.圆柱
D.圆锥
考点分析:
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D.
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计算:|-5|+(
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的结果是( )
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下列图形中,既是中心对称图形又是轴对称图形的是( )
A.
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D.
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下列计算中,正确的是( )
A.3a+2b=5ab
B.a•a
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4C.a
6÷a
2=a
3D.(a
3b)
2=a
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2
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一天早晨的气温是-7℃,中午的气温比早晨上升了11℃,中午的气温是( )
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