拔牙术后出血的局部原因有()A.牙龈撕裂 B.牙槽骨骨折 C.牙槽窝内有肉芽组织或异 发布时间:2017-02-06 17:36 │ 来源:www.tikuol.com 题型:多项选择题 问题: 拔牙术后出血的局部原因有()A.牙龈撕裂B.牙槽骨骨折C.牙槽窝内有肉芽组织或异物D.血凝块脱落E.血凝块继发感染
题型:多项选择题 下列化学反应的离子方程式正确的是( )A.向Ba(OH)2溶液中滴加NH4HSO4溶液至刚好沉淀完全:Ba2++2OH-+NH4++H++SO42-=BaSO4↓+NH3•H2O+H2OB.苯酚钠溶液通入二氧化碳气体:2C6H5O-+CO2+H2O=CO32-+2C6H5OHC.将少量SO2气体通入足量的NaClO溶液中:SO2+2ClO-+H2O=SO32-+2HClOD.稀硝酸中加入过量的铁屑:3Fe+8H++2NO3-=3Fe3++2NO↑+4H2O 查看答案
题型:多项选择题 The fellow felt rather _____ as he was the only person that wore sportswear at the party. [ ]A. in place B. out of place C. by the way D. in the way 查看答案