That's because fermenting corn into ethanol delivers less liquid fuel energy for internal combustion engines than does burning the kernels to generate power for electric motors.
因为，将玉米发酵后作为内燃式引擎的燃料所提供的能量，要比将其燃烧后发电提供给电机的能量少。
3
The internal protection devices and circuit inside batteries can avoid possible dangers. Improper disassembly will damage the protection function and causes heating, smoking or burning.