指示剂用量过多,则()。 A.终点变色更易观察 B.并不产生任何影响 C.终点变色不 发布时间:2018-05-08 10:05 │ 来源:www.tikuol.com 题型:单项选择题 问题: 指示剂用量过多,则()。A.终点变色更易观察B.并不产生任何影响C.终点变色不明显D.滴定准确度更高
题型:单项选择题 根据对话内容用合适单词填空。A: Who is (1) ________(2) ________today? B: (3) ________am. A: (4) ________we all here? B: No. A: (5) ________isn't at school today? B: Zhang Qiang. A: (6) ________is he? B: I(7) ________know. But I think he's (8) ________ (9)________. He looks (10) ________his father. 查看答案