Unit3Tellmehowtodoit[共1页].doc

Unit 3 Tell me how to do it
1. Remember, whatever you do, don’t lift heavy objects.
2. A battery charger is a device used to put energy into a rechargeable battery by putting an electric current through it.
3. The charging protocol depends on the size and type of the battery being charged.
4. Here is a new battery pack, which needs to be charged for the first time.
5. If the battery pack is too cool or has not been used for a long time, charging the battery pack fully will take longer than normal.
6. The torch will become extremely hot if used above the recommended usage times.
7. Using a piece of cloth to cover the light bulb, pull the light bulb away from the torch.
8. To protect your hands from the heat generated by the torch, wear protective gloves during operation.