不锈钢酸洗时，采用的酸洗液是（）。
A.硫酸
B.氢氟酸
C.盐酸
参考答案：B
— Why haven't you bought any butter?
— I _____ to, but I forgot about it. [ ]
A. meant
B. liked
C. wanted
D. expected
何谓流域汇流？
