—I apologize for not being able to join you for dinner. —________. We’ll get together later. A. Go ahead B. Not to worry C. That’s right D. Don’t mention it 答案:B图中所示为自动调温电熨斗的电路图.右下方为温控部分.在未通电和低于预定温度时,双金属片A和静片B上的触点接通,指示灯L亮,电热丝R发热、当温度达到预定温度时,双金属片因 向左弯曲,电路断开.若双金属片由铜片和铁片铆合而成,则左片是 片.调节调温旋钮C,使静片B向左时,调温电熨斗的预定温度值将变 .