慢性阻塞性肺气肿感染加重期可能会出现的并发症是
A．左心衰竭
B．心肌炎
C．I型呼吸衰竭
D．心包炎
E．II型呼吸衰竭
参考答案：E
—You didn't use to play tennis, ______?
—Yes. I still like playing tennis now. [ ]
A. didn't you
B. did you
C. weren't you
D. were you
酸性染料比色法测定的是（）
A、水相中染料的颜色
B、有机相中染料的颜色
C、被测离子对的颜色
D、呈电离状态的染料的颜色
E、有机离子对的颜色
