Engine: General Subjects

1. A After removing the thermometer, hold the thermometer by the lower end and try to recombine the mercury by several full arm swings.
2. B Repeatedly tap the side of the thermometer until the mercury recombines.
3. C After removing the thermometer, hold the thermometer by the upper end and try to recombine the mercury by several full arm swings.
4. D It is not possible to correct this situation.

Tip: press A-D to answer