An （6） mobile phone battery.
举一反三
- Mobile phone contains a brain, a heart, an antenna, a LCD, a keyboard, a microphone, a speaker and a battery.
- The accessory battery of an electric car is a 300-volt battery.( )
- Questions 5 to 7 are based on the news report you have just heard._______ A: An environment-friendly battery. B: An energy-saving mobile phone. C: A plant-powered mobile phone charger. D: A device to help plants absorb sunlight.
- If the battery is short of electricity, the engine and generator recharge the battery．
- ______ are belonging to energy storage battery. A: lead acid battery B: Li-ion battery C: solar cell D: nickel metal hydride battery