氟里昂
A.氟里昂
B.C02压缩气体
C.丙二醇
D.聚山梨酯80
E.胶态二氧化硅
参考答案:C
氟里昂
A.氟里昂
B.C02压缩气体
C.丙二醇
D.聚山梨酯80
E.胶态二氧化硅
参考答案:C
选词填空。 | |
2. The proposal is considered in the office. It is hard for all the members to agree on it. 3. Try to have more for the people with different views. 4. You know I am entirely about his getting married. I thought he didn't even have a girlfriend. 5. It is a headache for professors in the university to check the when they have a big class. |