问题
单项选择题
时变磁场对探测区中的导体产生（）。
A.交变磁场
B.模拟电路
C.数字电路
D.涡电流
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
时变磁场对探测区中的导体产生（）。
A.交变磁场
B.模拟电路
C.数字电路
D.涡电流
参考答案：D
请先阅读下列短文，掌握其大意，然后从各小题所给的A、B、C、D四个选项中选出可以填入空白处的最佳选项，并将其填到相应位置。 I’m a Chinese boy, My name is Wu Qiang. I 1 in Beijing now, because my 2___ work here. I 3 in a high school, and I’m 4 Class 1, Grade 7. I usually go to school 5 bus. Sometimes I 6 a bike. My home is fifteen 7 from school. I don’t go to school 8 Saturday and Sunday. On Saturday I never go out. I 9 stay at home to do my homework, and it often 10 me half a day. On Sunday I often go to the park with my parents. I have fun on weekends.
|