茶碱类治疗慢性阻塞性肺病的禁忌证包括()
A.倦怠
B.过敏
C.严重心肌炎
D.急性心肌梗死
E.活动性消化溃疡
参考答案:B, C, D, E
— Jim can play _______ soccer very well. What about you?
— I can play _______ piano very well. [ ]
A. /; the
B. /; /
C. the; /
气阀座面磨损后,阀线应(),如阀线变宽、中断或模糊不清,将造成气阀关闭不严、产生漏气。
A.连续
B.符合规定要求
C.光亮
D.正常