题目内容
用电压表测得电路端电压为零,这说明()。
2021-01-08
A.外电路断路
B.外电路短路
C.外电路上电流比较小
D.电源内电阻为零
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='32669' and id < 2598549 and id<>'2598549' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32669' and id > 2598549 and id<>'2598549' order by id asc limit 5