A.100g:25ml B.100g:35ml C.100g:45ml D.100g:55ml E.100g:16ml 超硬石膏粉水比例约为

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问题 A.100g:25ml
B.100g:35ml
C.100g:45ml
D.100g:55ml
E.100g:16ml
超硬石膏粉水比例约为

选项 A、 
B、 
C、 
D、 
E、 

答案A

解析
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