通常规定钢中锰硫比应大于()
A、5
B、10
C、15
D、20
参考答案:C
Your perfomance in the exam isn't that satisfactory. _____, you failed. [ ]
A. In a word
B. In other words
C. What's worse
D. What a pity
不属于气机失调的病机变化是()
A.气虚
B.气滞
C.气逆
D.气闭
E.气脱