治疗肝火犯肺所致的咳血,可选用()
A.桑杏汤
B.泻白散
C.百合固金汤
D.黛蛤散
E.一贯煎
参考答案:B, D
取等物质的量浓度的NaOH溶液两份A和B,每份10 mL,分别向A、B中通入不等量的CO2,再继续向两溶液中逐滴加入0.1 mol·L-1的盐酸,标准状况下产生的CO2气体体积与所加的盐酸溶液体积之间的关系如图所示,下列叙述正确的是( )
A.原NaOH溶液的物质的量浓度为0. 5mol/L
B.A线表明原NaOH溶液中通入CO2后,所得溶液中的溶质成分是Na2CO3,NaHCO3
C.B线中消耗盐酸0 < v(HCl) < 25mL时发生的离子反应为: OH-+H+=H2O H++CO32-=HCO3-
D.B曲线表明原NaOH溶液中通入CO2后,所得溶液加盐酸后产生CO2气体体积(标准状况)的最大值为112mL
Which statement is TRUE concerning the gooseneck().
A.It is a sailing maneuver which brings the vessel's head through the wind
B.It connects the boom to the mast and allows the boom to swing freely
C.It is a sailing condition where there is a loss of air flow over the sails
D.None of the above