The power that an amplifier delivers to a load is equal to the difference between the power that the circuit draws from the power supply and the power that the circuit dissipates. ? 正确|错误

Which of the following statements are right?( ) A: The sandy layer on top of sandy fields dissipates the soil heat into the atmosphere moreslowly. B: The sandy layer on top of sandy fields allows more rainfall to soak into the soil if it rains. C: The sandy layer on top of sandy fields slows water evaporation down if it doesn’t rain. D: The sandy layer on top of sandy fields absorbs the sun’s heat into the soil more slowly.