1.All soapy detergents are biodegradable?
2.All straight chain detergents are biodegradable?
Please help to answer the above questions.
Thankyou !
PS: With reference to the following CE PP:
ANS: (crtl+A)
43. B
44. D
收錄日期: 2021-04-13 14:54:01
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080106000051KK04227