A: To monitor the batteries and avoid damaging them during the charging process.
B: To provide power for accessories.
C: To pump electricity into the batteries as quickly as the batteries will allow.
举一反三
- 中国大学MOOC: This, combined with ultra-fast charging and longer-lasting batteries, means the drones of 2018 _____________________________.
- The controller of an electric car takes power from the batteries and delivers it to the motor.( )
- Dispose of batteries properly. Do not throw them into fire or＿ high temperature.
- A battery pack contains many batteries, wired in series to create hundreds volts.（ ）
- A fuel cell is a device that produces electricity from chemical fuels, in just one step. Unlike batteries, fuel cells don’t run down or need recharging. As long as there is a constant source of fuel and oxygen, fuel cells will continue to generate power.
内容
- 0
The major components of automobile electrical system include starting system, charging system, ignition system and accessory system.
- 1
There are two identical batteries in series, which statement is true?( ) A: The total voltage equals the sum of the voltages of each battery. B: The total voltage equals any battery voltage. C: The total voltage equals half of one battery voltage
- 2
In near future people relying on battery-powered devices to get around and do their work don't need to give up space in their packs to lots of extra batteries because ______. A: their heavy packs can make electricity B: battery-powered devices will be improved a lot C: they typically carry heavy backpacks D: global positioning system (GPS) receivers and night-vision goggles work themselves
- 3
Which one is a nature-friendly behavior? A: over use of plastic bags. B: using public transportation. C: batteries are thrown away at random. D: abusive use of exhaustible resources
- 4
The charging system maintains the _____'s state of charging. A: symbiotic B: prehistoric C: metabolism D: battery