问题
多选题
如图所示,理想变压器原副线圈匝数之比为4:1,原线圈接入一电压为u=220![]() A.副线圈中电压表的读数为55V B.副线圈中输出交流电的周期为0.01s C.原线圈中电流表的读数为0.5A D.原线圈中的输入功率为110 ![]() |
答案
AC
如图所示,理想变压器原副线圈匝数之比为4:1,原线圈接入一电压为u=220![]() A.副线圈中电压表的读数为55V B.副线圈中输出交流电的周期为0.01s C.原线圈中电流表的读数为0.5A D.原线圈中的输入功率为110 ![]() |
AC
完形填空。 | |||
Boy: Look! This is my mother. Girl: Wow! How beautiful. What does 1 do? Boy: 2 is a singer. Because she likes 3 . Girl: 4 does she work? Boy: She 5 in a big company. Girl: How 6 she go to work? Boy: She goes to work on 7 . Girl: What's her hobby? Boy: She likes listening to 8 .
|