A.0~5V,4~20mA B.1~5V,0~20mA C.0~5V,0~20mA D.1~5V,4~20mA
A.指針打彎 B.游絲力矩不足 C.指針?biāo)蓜?dòng) D.外殼破損
A.150kPa B.300kPa C.450kPa D.250kPa