问题
多项选择题
苯巴比妥原料药的鉴别方法有()
A．甲醛—硫酸的反应
B．亚硝酸—硫酸的反应
C．银盐反应
D．铜盐反应
E．红外光谱法
答案
参考答案：A,B,C,D,E
搜题请搜索小程序“爱下问搜题”
苯巴比妥原料药的鉴别方法有()
A．甲醛—硫酸的反应
B．亚硝酸—硫酸的反应
C．银盐反应
D．铜盐反应
E．红外光谱法
参考答案：A,B,C,D,E
I used to be ashamed of my grandma. I know that's a thing to say, but it was true until today, so I have to it. The started when my friend Katy found Grandma's false teeth floating in a glass on the bathroom sink. I was so used to seeing them that I took notice of them. But Katy shouted, laughing and to tell everyone about it. I had to get down on my knees and her to shut up so my grandma wouldn't and get hurt. After that happened, I there were a million things about Grandma that were embarrassing. Once she took Jill and me out to Burger King. ordering our hamburgers well-done, she told the person behind the counter, "They'll have two Whoppers (巨无霸) well-to-do. " Jill burst out laughing, but I almost . After a while, I started wishing I could Grandma in a closet. I even complained to my parents. Both my parents said I had to be careful not to make Grandma feel in our home. Then last Wednesday, something happened that everything completely. My teacher told us to help find interesting old people and them about their for a big Oral History project. I was trying to think of someone when Angie pushed me gently. "Volunteer your grandmother," she whispered. "She's and rich in experience." That was the last thing I ever thought Angie would say about my grandma. This is how I ended up on today interviewing my own grandmother before the whole school assembly (集合). All my friends and teachers were listening to her she was a great heroine. I was of my grandma and hoped she would know that I had been ashamed of her.
|