如何测电流表的内阻

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select * from tbl_Articles WHERE ArticleID=3446167 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3446167 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3446167 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1067315,1096993,1063867,1088906,1078310,1113417,1062880,1112032,1073820,1112841,1109308,1098207,1114000,1095960,1086680,1090260,1061610,1049542,1101273,1065543,1105502,1117055,1109671,1107386,1048422,1129029,1016441,1081881,1106232,1082936) ORDER BY field (ArticleID,1067315,1096993,1063867,1088906,1078310,1113417,1062880,1112032,1073820,1112841,1109308,1098207,1114000,1095960,1086680,1090260,1061610,1049542,1101273,1065543,1105502,1117055,1109671,1107386,1048422,1129029,1016441,1081881,1106232,1082936)