灭活补体需要多少度,30分钟()
A.37℃
B.42℃
C.56℃
D.78℃
E.100℃
参考答案:C
解析:灭活补体需要56℃,30分钟。
HIV侵犯的淋巴细胞有
A.TD
B.TM
C.Ts
D.Tc
E.TH
— Good morning. Doctor White's office .
— Hello, this is Peter Smith.Could you please tell Doctor White I____? My car ____ start. [ ]
A. was delayed; doesn't
B. will be delayed; won't
C. am delayed; didn't
D. would delay; mustn't