吹苯操作要求碱液温度高于（），碱液浓度大于4%。
参考答案：75℃
— Would you like to meet John at the airport?
— ________.He is the last person I want to see. [ ]
A. Yes, I'd like to
B. I'd like to, but I have no time
C. Oh, no, not me
D. With pleasure
随机变量X的概率分布表如下：
A．k
B．1
C．4
D．10
E．p
F．20%
G．40%
H．40%
