汽车排放耐久到目前为止,根据不同的要求,里程分别有()。
A、80000km
B、100000km
C、120000km
D、160000km
参考答案:A, B, D
非离子型表面活性剂的优点是()
A.可杀菌、防腐
B.溶血作用小
C.不受溶液pH的影响
D.能与大多数药物配伍
E.可用于注射剂
根据中文、英文解释或句意填空
1. My father is a very good ____________(游泳者). He can swim so well.
2. ____________ is the first day of a week and Monday is the second.
3. We don’t like Daniel because he is not very ____________(礼貌) and likes playing tricks on others.
4. I’m a little fat, and I think I need more ______________ (锻炼)
5. The book is so ______________ (fun), and we all want to read it.