N,N’-二甲基乙二胺
参考答案:
解析:CH3NHCH2CH2NHCH3
血清学检测时,一般抗原抗体反应的pH是()
A.3~4
B.5~6
C.6~8
D.9~10
E.8~9
My mother had a little this morning. [ ]
A. tomatoes
B. noodles
C. rice
D. potato