同学们在设计电路时,往往不知从何下手,盲目性很大。其实,只要掌握了正确的分析方法,分清开关和用电器的位置关系,就能有效地解决这类问题。 When students are designing circuits, they often do not know where to start and are blind. In fact, as long as we have mastered the correct analysis method and distinguish the positional relationship between switches and appliances, we can effectively solve such problems.