用重氮化法测定对氨基苯磺酸时,由于其难溶于酸,应先用()溶解,然后将溶液酸化后进行重氮化。
A.乙醇
B.乙酸
C.盐酸
D.氨水
参考答案:D
顺叙
____you said at the meeting describes a bright future for the company.
A.When
B.How
C.What
D.That