缓冲溶液一般是由()组成的。A、强酸、强碱 B、弱酸、弱碱 C、弱酸及其共轭碱或弱碱 发布时间:2017-07-16 22:03 │ 来源:www.tikuol.com 题型:单项选择题 问题: 缓冲溶液一般是由()组成的。A、强酸、强碱B、弱酸、弱碱C、弱酸及其共轭碱或弱碱及其共轭酸D、强酸和弱碱
题型:单项选择题 女性,23岁,反复上腹痛1年,阵发性绞痛,无向他处放射,与饮食无明显相关性,行电子胃镜:慢性胃炎。需与哪些疾病鉴别()A.慢乙肝 B.阑尾炎 C.溃疡性结肠炎 D.十二指肠溃疡 E.胆石症 查看答案
题型:单项选择题 短文改错(共10小题;每小题1分,满分10分)Dear Abby,I want to ask you for my advice. When I leavethe school, I want to be an engineer. For yearsI have interested in engineering. I have made toolsat home and have written articles for magazine. Myfather says that engineering is a suitable subject fora girl to study it. He wants me to study geography., However, I am not interested in this subject at all. Itried to read books on it, so I was so bored. What should I do? I respect my fathers judgementand experience, but I don’t think he understood me.Best wishes, 小题1:__________小题2:__________小题3:__________小题4:_________小题5:_________小题6:_________小题7:__________小题8:_________小题9:_________小题10:__________ 查看答案
题型:单项选择题 北方某地3月,1个12口之家出现首例流行性出血热,之后半个月之内,共有9人相继发病。血清学检测,抗汉坦病毒IgM均阳性。该户饲养鸡、鸭、鹅、紫貂和猪、狗、猫等,老鼠亦较多,卫生条件差。首例发病前2周, 9人在仓房围捕老鼠,尘埃飞扬。该病的病原体是A.流行性出血热螺旋体B.流行性出血热杆菌C.流行性出血热病毒D.流行性出血热衣原体E.流行性出血热立克次体 查看答案