咳嗽,痰稠色黄,鼻流浊涕,咽喉肿痛,发热,微恶风寒,舌尖红,脉浮数,证属() ["风热犯肺","热邪壅肺","暑热犯肺","痰湿阻肺","燥邪犯肺"]
里虚寒证出现畏寒肢冷的病机是() ["寒邪束表,卫气失宣","阳虚失于温煦","阴寒内盛,阳气被郁","水湿内停","以上都不是"]
某发电机型号为SF300-48/1260,机组额定转速为125r/min,计算发电机频率。
小腹刺痛,小便不利,多属() ["脾胃虚寒证","寒凝肝脉证","膀胱蓄血证","虫积腹痛","食积腹痛"]
某水轮发电机额定电流为2000安,发电机额定电压为13.8千伏,计算发电机额定容量。
有一台水轮发电机额定出力为335000KW,设计水头为120M,该水轮机效率为0.9,求该水轮机额定流量?