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用一张面积为S的矩形纸片,将对边重合围成圆柱,能得到一高一矮两种圆柱,它们的侧面...
用一张面积为S的矩形纸片,将对边重合围成圆柱,能得到一高一矮两种圆柱,它们的侧面积分别为S1、S2,那么S、S1、S2的数量关系为( )
A.S=S1=S2
B.S1<S<S2
C.S<S1<S2
D.S1<S2<S
考点分析:
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