男性,60岁,细菌性肝脓肿引流术后,拔除引流管的主要指征是()
A.体温正常
B.肝区疼痛消失
C.血象正常
D.引流管无脓液流出
E.B超显示脓腔消失
参考答案:E
依据现行《建筑设计防火规范》的规定,排烟管道应采取隔热防火措施或与可燃物保持最小()的距离
A.0.1m
B.0.15m
C.0.2m
D.0.5m
It’s easy ______ English and it’s important ______it.
A.study, use
B.say, speak
C.speak, say
D.to learn, to practice