实验 | 温度/℃ | | | | | |
1 | 25 | 3.0 | 2.0 | 1.0 | 0 | 2.0 |
2 | 25 | 3.0 | 2.0 | 2.0 | 0 | 1.0 |
3 | 25 | 4.0 | 2.0 | 2.0 | 0 | 0 |
4 | 25 | 3.0 | 2.0 | 1.0 | 0.5 | a |
回答下列问题: