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矩形纸片ABCD中,AD=4cm,AB=10cm,按如图方式折叠,使点B与点D重...
矩形纸片ABCD中,AD=4cm,AB=10cm,按如图方式折叠,使点B与点D重合,折痕为EF,则DE=
cm.
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已知实数 a、b、c满足
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,那么abc的值为
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如图,△ABC中,∠ACB=90°,∠B=30°,AC=1,过点C作CD
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A.
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B.
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C.
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D.
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函数y=ax
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(a≠0)在同一直角坐标系中的图象可能是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022165120090611987/SYS201310221651200906119008_ST/images1.png)
B.
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C.
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D.
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如图,在△ABC中,∠C=90°,AC=8cm,AB的垂直平分线MN交AC于D,连接BD,若AD=5cm,则BC的长为( )
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A.4cm
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