A.5~15ml:100g B.30~35ml:100g C.18~24ml:100g D.40~45ml:100g E.50~60ml:100g 超硬质石膏的水粉比例通常为

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问题 A.5~15ml:100g B.30~35ml:100g
C.18~24ml:100g D.40~45ml:100g
E.50~60ml:100g
超硬质石膏的水粉比例通常为

选项 A、 
B、 
C、 
D、 
E、 

答案D

解析
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