图片中的丝是___丝？（）
A: 祥丝
B: 螺丝
C: 拱丝
D: 门洞丝
A: 祥丝
B: 螺丝
C: 拱丝
D: 门洞丝
举一反三
- 图片中的丝是___丝？（）[img=325x216]17d60b0afce2bd1.jpeg[/img] A: 祥丝 B: 螺丝 C: 拱丝 D: 门洞丝
- 图片中的丝是___丝？[img=325x216]1803bc4103cd0ba.png[/img] A: 门洞丝 B: 拱丝 C: 祥丝 D: 螺丝
- 图中把螺丝剪断，围成小圆圈，并在接头处点焊，叫小松丝。（）<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202002/958898f90ef443eaa9cde8e2a72bf71f.jpeg" />
- 理想低通滤波器的传输函数<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202002/980b5b2a8d7044b697bc516003ea3acb.png" >是()。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202002/9a82e2e4ff27470da538512097ee6438.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202002/c079877bd52d471db3cd6e163f62adbb.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202002/52aa9898f12641d797c40e4d118bd733.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202002/a7815d7407f34172aeef470a6adc5f47.png" >
- 单边拉普拉斯变换<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202002/423a53f9b3bf40989454133dbce2d262.png" >的原函数等于（）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202002/301dd2111ac64b0e8217cba94ba1a1ab.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202002/9772eee6eab34c208eba55009d00041b.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202002/42bfb5f864e34b5ca02a2a1cc9d9c71b.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202002/659eef6ba24b490191772fe51bab3c9a.png" >