某段电路两端的电压是220v 用电器的电阻是40 Ω能否用量程为0 3a 的电流表测其电流a.能b.不能——青夏教育精英家教�—— Template




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tomski某段电路两端的电压是220v 用电器的电阻是40 Ω能否用量程为0 coloring