挑战习题
1/5单选题
难度:

1.

如图所示的电路中,A1和A2是两个完全相同的电流表,均有“0-0.6A”、“0-3A”两个量程,当开关S闭合时,两表均有正常的示数,且指针偏转的角度相同,则R1:R2为()


A

1:4

B

4:1

C

1:5

D

5:1

提示1:
PHA+QTxzdWI+MTwvc3ViPua1i+aUr+i3r+eUtea1ge+8jEE8c3ViPjI8L3N1Yj7mtYvlubLot6/nlLXmtYHvvIzliJnkuIDlrprmmK/lubLot6/nlLXmtYHooajph4/nqIvlpKfvvIzmlK/ot6/nlLXmtYHooajph4/nqIvlsI88YnI+PC9wPg==
提示2:
PHA+5YGP6L2s6KeS5bqm55u45ZCM77yM55Sx6YeP56iL5YWz57O75b6X5bmy6Lev55S15rWB5piv5pSv6Lev55S15rWB55qENeWAjTwvcD4=
正确答案:Qg==
PGRpdj5BPHN1Yj4xPC9zdWI+5rWL5pSv6Lev55S15rWB77yMQTxzdWI+Mjwvc3ViPua1i+W5sui3r+eUtea1ge+8jOWImeS4gOWumuaYr+W5sui3r+eUtea1geihqOmHj+eoi+Wkp++8jOaUr+i3r+eUtea1geihqOmHj+eoi+Wwj++8m+WBj+i9rOinkuW6puebuOWQjO+8jOeUsemHj+eoi+WFs+ezu+W+l+W5sui3r+eUtea1geaYr+aUr+i3r+eUtea1geeahDXlgI3vvIzliJlSPHN1Yj4yPC9zdWI+5pSv6Lev55qE55S15rWB5pivUjxzdWI+MTwvc3ViPuaUr+i3r+eUtea1geeahDTlgI3vvIznlLXmtYHmr5TnrYnkuo7nlLXpmLvnmoTlj43mr5TvvIzliJlC5q2j56GuPGJyPjwvZGl2Pg==