题目: 盐酸氯丙嗪A.火焰反应,火焰显紫色B.供试品的吡啶溶液加铜吡啶试液1滴,即显紫色C.供试品溶液加硝酸,即显红色,渐变为黄色D.制备衍生物测其熔点,应为174~178℃E.供试品溶液与三氯化铁试液作用,即显紫色 以下药物的鉴别反应为 答案: 参考答案:B
题型:单项选择题 关于会计档案的销毁,下列说法正确的是______。A.单位所有的会计档案均不得销毁B.会计档案在保管期满后,可以直接销毁C.对于保管期满但尚未结清的债权债务的原始凭证不得销毁D.国家财政部门销毁会计档案可以不派人监销 查看答案
题型:阅读理解 Read and choose. 阅读短文,选出正确答案。 Look! This is our classroom. It's not too big or too small, but very clean and nice. It has two doors and six windows. The doors are white and the windows are green. There are thirty-two chairs and desks in the classroom. They are blue. In front of the big blackboard is our teacher's desk. Miss Zhang is working beside the desk. There are many exercise books (练习本) on the desk. We love Miss Zhang. She is a good teacher. You can see a lovely clock above the blackboard. It looks like a bear. Mmmm...What time is it now? It's 3:40 in the afternoon. We're having a computer class in the computer room. We are not in our room now.1. — How is the classroom? —It's .[ ]A. too big B. too small C. clean and nice2. — How many windows are there in the classroom? — There are .[ ]A. two B. six C. thirty-two3. — What colour are chairs and desks? — .[ ]A. White B. Green C. Blue4. Who is in the classroom?[ ]A. Miss Zhang. B. The class. C. Nobody.5. — What time is it now? — It's .[ ]A. four thirty B. three forty C. three thirty 查看答案