理论上当蒸汽泵排量一定时,泵的功率是扬程的一次函数。
参考答案:错
川芎的主治病证是()。郁金的主治病证是()。
A.风湿痹痛
B.湿热黄疸
C.血虚失眠
D.肾虚腰痛
E.肠燥便秘
When the player finished running, he was out of .
A.breather
B.breathing
C.breath
D.the breath