下列各项符合支气管扩张诊断的是()
A.咳嗽于清晨或夜间变动体位时加剧
B.咳嗽伴胸痛
C.咳嗽伴咯血
D.痰液放置后分层
E.咳嗽伴哮鸣音
参考答案:A, C, D
London is one of the best places in the world to _____ education with pleasure, so it’s good for your pupils.
A.compare
B.combine
C.equip
D.replace
驱动装配约束一次可以驱动几个?()
A.1
B.2
C.3
D.无数个