第二章单元测试
We can eat or drink in laboratories
If a liquid gets into your eyes, the eye should be washed immediately with clean running water for at least 10min.
In the case of fire alarm, we need stop all of your ongoing work, turn off gas and electric devices.
There is no need to label glass or flask filled with solution.
If you work with flammable solvent, make sure there is no source of ignition close by.
A:错 B:对
答案:错
A:错 B:对
A:对 B:错
A:错 B:对
A:错 B:对
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