医院的呼叫器使用说明
@史奔5660：医院呼叫器 - 搜狗百科
归倪19140146524…… [答案] My mother is tall and thin.She has big eyes.She is 36 years old.She is a doctor.She works in a hospital.She likes sleeping and watching TV.
@史奔5660：呼叫伊森,呼叫, - 儿科 - 复禾健康问答
归倪19140146524…… [答案] 1、在电力系统非正常状况下,用户受电端的电压最大允许偏差不应超过额定值的±10%. 2、380V属于“10千伏及以下三相供电的,为额定值的±7%”; 3、即380V供电系统电压,应在380(1-7%)V 380(1+7%)V, 也就是353.4V~406.6V之间.
归倪19140146524…… [答案] My mother is tall and thin.She has big eyes.She is 36 years old.She is a doctor.She works in a hospital.She likes sleeping and watching TV.
@史奔5660：呼叫伊森,呼叫, - 儿科 - 复禾健康问答
归倪19140146524…… [答案] 1、在电力系统非正常状况下,用户受电端的电压最大允许偏差不应超过额定值的±10%. 2、380V属于“10千伏及以下三相供电的,为额定值的±7%”; 3、即380V供电系统电压,应在380(1-7%)V 380(1+7%)V, 也就是353.4V~406.6V之间.
