使用鼻罩持续气道正压通气的常见副作用是()
A.气道陷闭
B.鼻充血
C.嗜睡
D.打鼾
E.心律失常
参考答案:B
— Would you mind cleaning the blackboard?
— _____. I'll do it in a minute. [ ]
A. OK.
B. Yes, of Course
C. No, not at all.
下列动物中,()属于季节性发情动物。
A.大鼠
B.猫
C.小鼠
D.犬