代谢性酸中毒的血钾浓度往往()
A.升高
B.降低
C.不发生变化
D.可发生波动
E.以上均正确
参考答案:A
—What do you think about this radio station?
—I think it's really great. It plays music. [ ]
A. interesting
B. dull
C. boring
D. bad
影响反应器初次升温的因素有()
A、调温水温度
B、调温水流量
C、流化气量
D、蒸汽压力/流量