仅糖酵解需要的是()
A.磷酸果糖激酶-2
B.3-磷酸甘油醛脱氢酶
C.丙酮酸激酶
D.6-磷酸葡萄糖脱氢酶
E.果糖双磷酸酶-1
参考答案:C
Jim with his parents there. [ ]
A. are taking photos
B. is taking photos
C. take photos
D. are takeing pthotos.
共析钢中奥氏体的形成过程是(),(),残余Fe3C溶解,奥氏体均匀化。