滴定的终点和等量点不一致时,两者之间的差值称为()。
参考答案:滴定误差
下面短文中有8处语言错误。请在有错误的地方增加、删除或修改某个单词。
增加:在缺词处加一个漏词符号(∧),并在其下面写上该加的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线,并在该词下面写上修改后的词。
注意: 1. 每处错误及其修改均仅限一词;
2. 只允许修改8处,多者(从9处起) 不计分。
My classmate Liu Hong is a warm-hearted girl. She is good in studying, singing, dancing and playing piano. After hear Sichuan earthquake, she felt very sad about it. She decided to do something to help the Sichuan people. First she calls her friends up and came up with a benefit show. Then she handed out advertisement with her friends or put up signs asking people to watch. Luckily she did it very good. A lot of people were moved and offered some money to the Sichuan people. At last, she raised up 5,000 yuan. She gave away all the money to the quake-hit areas.
镇咳药用药过程中应注意()
A.对痰液较多的咳嗽应祛痰剂与镇咳药合用
B.连续口服1周,症状未缓解或消失应继续服用
C.支气管哮喘伴咳嗽时宜适当合用平喘药
D.服用苯丙哌林时应整片吞服
E.严重高血压、有精神病史者应禁用右美沙芬