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共找到 963 与OF=2 相关的结果，耗时36 ms
英语翻译Thanks for writing to us.We,hereby confirm that we need these 5 items packed in a single polyfoam box with coloured paper cover of
英语
our brand logo
a number of soilders when divided into groups of three,five or seven,will give a remainder of 2.(a)what is the least number of soldier
英语
?(b)if there w
一道英文数学题A sample space consists only of 2 events,A and B.Which of the following would we use to describe A and B if they cannot occur a
英语
the same time
一道数学题目,英文的A missile is fired vertically from a point that is 5 mi from a tracking station and at the the same elevation. For the first
数学
20 sec. of fli
1.I like dogs because they are ( ) friendly.1.I like dogs because they are ( ) friendly.A.a kind of B.kinds of C.kind of 2.At night th
英语
koala bear ge
有几个题不会做1.已知矩形ABCD中,对角线AC.BD相交于点O,且OE⊥BC于点E,OF⊥AB于F!若OE-
OF=2
.矩形周长等于36.则面积为?这到题本来就没图）.2若一个正方形体积变为原来的N倍~则他的棱长变为原来的
数学
听讲~可是做题总不好!我的问
（1）如图已知,AB是圆O的直径,弦CD交AB于点E,角CEA=45°,OF垂直CD,垂足为点F,DE=7,
OF=2
,求CD长（2）如图已知圆O半径长3厘米,半径OB与弦AC垂直,垂足为点D,AC为3厘米,求角AOB大小,求CD长.图子麻烦在我的
数学
These days men and women, young and old are 1 the same kind of 2 , and a lot of 3 have long hair. W
英语
如图,正方形ABCD的对角线AC,BD相交于点O,点P是BD上一点,PE⊥AB于点E,PF⊥AD于点F,连接OE,OF.(1）证明：OE=OF(2)若PE=1,PF=3,求OE的长.
数学
已知：如图,在矩形ABCD中,AE垂直BD于E,BE:ED=1:3,从两条对角线的交点O作OF垂直AD于F,且
OF=2
,求BD的长.
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