题型:问答题 下列离子方程式中正确的是( )A.盐酸与碳酸钡反应CO32-+2H+═CO2↑+H2OB.碳酸钙溶于醋酸:CaCO3+2H+=Ca2++H2O+CO2↑C.硝酸银溶液中加入铜粉2Ag++Cu═Cu2++2AgD.铁与稀盐酸反应2Fe+6H+═2Fe3++3H2↑ 查看答案
题型:问答题 患者,女,80岁。全身水肿,气急,BP190/90mmHg,HR60次/分。给予口服利尿剂和降压药并监测尿量,正常成人24h尿量是()A.2000~2500mlB.800~1500mlC.1500~2500mlD.1000~2000mlE.800~1000ml 查看答案
题型:问答题 He is()about his chances of winning a gold medal in the Olympics next year.A.optimisticB.optionalC.outstandingD.obvious 查看答案