采用版图匹配设计技术后可提高元器件的匹配性能，但会带来哪些不利因素？
参考答案：
增加芯片面积、布线比较困难、连线的寄生效应限制匹配精度
请用所给单词的适当形式填空。
1. A boy _____ (build) a model house this morning.
2. I enjoy _____ (fish) on Sundays.
3. Our favourite _____ (activity) are fishing,boating and skating.
4. Would you like _____ (go) fishing?
5. I have _____ (many) cards than you have.
心室颤动时，首次直流电除颤用（）
A.100J
B.150J
C.200J
D.300J
E.360J或以上
