A. Zeta电位降低 B. 分散相与连续相存在密度差 C. 微生物及光、热、空气等的作用 D. 乳化剂失去乳化作用 E. 乳化剂类型改变
A. 撒于水面 B. 浸泡、加热、搅拌 C. 溶于冷水 D. 加热至60~70℃ E. 水、醇中均溶解
A. She knows the guy who will give the lecture. B. She thinks the lecture might be informative. C. She wants to add something to her lecture. D. She’ll finish her report this weekend.