单项选择题
A.3 B.4 C.5 D.6
A.0.10/0.15 B.0.15/0.20 C.0.25/0.30 D.0.30/0.40
A.测电流 B.测电压 C.测电阻
A.4000kpa-21000kpa B.2000kpa-20000kpa C.3000kpa-20000kpa D.5000kpa-23000kpa
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