[问答题] 简述压力开关的工作原理？

锅：灶具( ) ["钢铁：金属","水：江河","玻璃：门窗","花草：树木"] 准确：精确( ) ["讨厌：厌恶","提升：提拔","渴望：奢望","接收：接受"] 一般抓捕器滑楔的为（） ["1：10","1：15","1：20","1：30"] 思考：思索( ) ["支持：反对","谦虚：谨慎","鄙视：赞许","奔跑：奔走"] 温暖：暖和( ) ["镇定：冷默","夸奖：批评","珍贵：贵重","愉快：烦恼"] 简述压力开关的工作原理？