既能治疗风湿痹痛,又能治疗诸骨鲠咽的药物是() A.五加皮 B.桑寄生 C.木瓜 D 发布时间:2017-06-01 08:47 │ 来源:www.tikuol.com 题型:单项选择题 问题: 既能治疗风湿痹痛,又能治疗诸骨鲠咽的药物是()A.五加皮B.桑寄生C.木瓜D.羌活E.威灵仙
题型:单项选择题 充分燃烧7g乙烯(C2H4)气体生成CO2气体和液态H2O,放出b kJ的热量,则相同条件下乙烯燃烧的热化学方程式正确的是A.C2H4(g)+3O2(g) = 2CO2(g) +2H2O(l)△H = -2b kJ·mol-1B.C2H4(g)+3O2(g) = 2CO2(g) +2H2O(l)△H = +2b kJ·mol-1C.C2H4(g)+O2(g) =CO2(g)+H2O(l)△H = +b kJ·mol-1D.C2H4(g)+3O2(g) = 2CO2(g) +2H2O(l)△H = -4b kJ·mol-1 查看答案