简单地说,离子交换过程实际上只有(),()和()三步。
参考答案:外部扩散;内部扩散;化学交换反应
心源性水肿常先出现的部位是()
A.身体低垂部位
B.颜面、眼睑
C.全身
D.胸腔
E.腹腔
—You used to wear T-shirts and jeans, didn't you?
—_________. [ ]
A. Yes, I did
B. Yes, I used
C. No, I don't
D. Yes, I do