问题
单项选择题
古蔡法，反应液中有
A．0.002mg
B．0.01～0.02mg
C．0.01～0.05mg
D．0.05～0.08mg
E．0.1～0.5mg
所含待测杂质的适宜检测量为
答案
参考答案：A
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古蔡法，反应液中有
A．0.002mg
B．0.01～0.02mg
C．0.01～0.05mg
D．0.05～0.08mg
E．0.1～0.5mg
所含待测杂质的适宜检测量为
参考答案：A
| 补全对话，有两个选项多余。 | |
| A: Hi, Mike. The summer vacation is coming. 1 B: Yes, I'm going to Hong Kong for vacation. A: 2 B: I'm going there with my parents. A: 3 B: We're staying there for two weeks. A. 4 B: Well. We are visiting some of our friends and going sightseeing. A: When are you leaving? B: We are leaving next Friday. A: I hope you will have a great time there. B: 5 | |
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