在人员测评过程中,当信度系数为何种情况时,不宜将测验所得的结果用作对个人或团体的评价( )
A.r≤0.70
B.r≤0.80
C.r>0.70
D.r>0.80
参考答案:A
I have run out of the salt. I need to buy some now.
A. run out B. run of C. used up
一般来说,焦炭灰分每升高1%,高炉熔剂消耗量约增加(),炉渣量约增加()。
A.4%3%
B.3%2%
C.3%4%
D.2%3%