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[主观题]
三点式LC振荡电路的特点是反馈信号取自三个端点。
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)
第4题
A、Make yourself at home.
B、We are very honored to be invited.
C、It is my treat this time.
D、The hospitality of the host impressed me most.
第7题
A、1∶2,1∶2
B、1∶1,1∶1
C、1∶1,1∶2
D、1∶2,1∶1
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