咳血方主治病证的病机特点是()
A.血分有热,热迫血行
B.湿热蕴结,血渗肠道
C.脾阳不足,中焦虚寒
D.肝火犯肺,灼伤肺络
E.下焦瘀热,损伤血络
参考答案:D
Excuse me. Where is the library?[ ]
A. Where's the museum?
B. Where's the hospital?
C. It's next to the post office.
已知某离心泵输送清水,密度998kg/m3,泵扬程50m,流量70m3/h,效率56%,则其轴功率为()。
A.15kW
B.17kW
C.19kW
D.21kW