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生石灰中CaO为82.4%,SiO2为3.2%,R为1.8时,有效CaO是多少?
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在窗体中添加一个命令按钮,编写如下程序: Private Sub Sub1(p,m,n) p=p+1:m=m+1:n=n+1 Print "sub1:";p;m;n End Sub Private Sub Command1_Click() a1=1:b=2:c1=3 Call Sub1(a,b1+3,c1) Print"Main:";a1;b1;c1 End Sub 程序运行后,输出结果为A.Sub: 2 6 4 Main: 2 6 4B.Sub: 2 6 4 Main: 2 6 4C.Sub: 2 6 4 Main: 1 2 3D.Sub: 2 6 4 Main: 2 2 3
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炉渣碱度的表达式为()。A、R=(SiO2)/(CaO)B、R=(CaO)/(SiO2)C、R=(CaO)/[(CaO)+(SiO2)]D、R=[(SiO2)+(Al2O3)]/[(CaO)+(MgO)]
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按照正常的吹炼过程,以下化合物的变化顺序正确的是:()。A、CaO·FeO·SiO2→2CaO·SiO2→2FeO·SiO2B、2FeO·SiO2→CaO·FeO·SiO2→2CaO·SiO2C、2CaO·SiO2→2FeO·SiO2→CaO·FeO·SiO2
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多选题标准砝码的质量为m,测量得到的最佳估计值为100.02147g,合成标准不确定uc(ms) 为0.35mg,取包含因子k=2,以下表示的测量结果中 ( ) 是正确的。Apmsubs/sub=100.02147g;U=0.70mg,k=2/pBpmsubs/sub=(100.02147±0.00070)g;k=2/pCpmsubs/sub=100.02147g;usubc/sub(msubs/sub)=0.35mg,k=1/pDpmsubs/sub=100.02147g;usubc/sub(msubs/sub)=0.35mg/p
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