氢在钢中溶解与其分压的关系是()。
A. [H]=KH(PH)1/2
B. KH*PH=[H]
C. [H]= KH*PH2
D. [H]= KH1/2*PH
To make a correct mix for dental stone when using 50g ofpowder,the amount of water wouldbe
A. 10~12ml
B. 14~15ml
C. 28~30ml
D. 45~50ml
The desirable strength ofgypsum materials is()related to the amount ofwater used
A. Directly
B. Indirectly
C. not
D. partially