题型：填空题 根据句意，选择所给单词填空。tomatoes eggplant tofu carrots1. These vegetables are purple. Some are long. Some are round (圆的). _______________2. They are round and red. They are not fruits. They are vegetables. _______________3. They are long and red. Some people don't like them, but rabbits like them very much. _______________4. This kind of food is very white, and very soft (软). _______________ 查看答案
题型：填空题 关于表面活性剂HLB值表述正确的是（）A.表面活性剂的亲水性越强，其HLB越大B.表面活性剂的亲油性越强，其HLB越大C.表面活性剂的CMC越大，其HLB越小D.HLB值大，表面活性剂易产生起昙现象E.HLB值越小，表面活性剂的毒性越小 查看答案