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.
举一反三
- Electricity generated from hydroelectric dams and wind power is more _______ than fossil fuel generated power.
- Fuel cells are versatile as they can scale up easily and meet a variety of power needs – large or small. You can ____ individual fuel cells to increase the amount of power they can provide. The taller the stack, the more power you have.
- 5-2.In fuel cells，the water is produced in which side?
- 这个步骤确保燃油泵工作正常。 A: This step makes sure that the fuel pump operates correctly. B: The following step establishes the correct functioning of the fuel pump. C: The following step exercises the correct functioning of the fuel pump. D: If you follow the step, you don't have to fear the incorrect functioning of the fuel pump.
- 这个问题来源于燃油系统。 A: The source of the problem is in the fuel system. B: The beginning of the problem is in the fuel system. C: The origin of the problem is in the fuel system. D: The problem originates from the fuel system.