题目内容
解比例,并验算.
x∶=28∶
x=
[ ]
A.8 |
B.12 |
C.4.5 |
D.10 |
答案:D
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=
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A.8 |
B.12 |
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D.10 |
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x∶
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A .8 |
B .12 |
C .4.5 |
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![](http://thumb.zyjl.cn/pic7/pages/0000/0C21/0034/485f7f817d2034fb848efb49e96c31b5/A/Image618.gif)
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A .8 |
B .12 |
C .4.5 |
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