利用泵体内往复运动的活塞,增大流体的静压能,使流体的低压头变成高压头,将流体排出体外的泵是() ["离心泵","往复泵","旋转泵","气动泵"]
下列土石坝施工中,描述正确的是()。 ["防渗体分段碾压时,垂直碾压方向搭接带宽度应不小于0.3~0.5m","防渗体分段碾压时,顺碾压方向搭接带宽度应为1.0~1.5m","砂砾料、堆石及其他坝壳料纵横相结合部位,宜采用台阶收坡法","在混凝土或岩石面上填土时,应洒水湿润,并涂刷浓泥浆","在混凝土或岩石面上填土时,应待泥浆干后铺土和压实"]
镇肝熄风汤的主治与下列何项无关() ["A.肺肾阴亏","B.肝阳上亢","C.风阳上扰","D.气逆血冲","E.肝肾阴亏"]
盐炙法的适用范围是() ["补肾固精药","补中益气药","疗疝止痛药","利尿药","泻相火药"]
起自肱骨内上髁,止于第二掌骨底的肌肉是()。 ["指总伸肌","桡侧屈腕肌","尺侧屈腕肌","掌长肌"]
如何从X线平片上分析先天性心脏病?