jun
2021-12-26T12:49:31+00:00
如图所示的电热水壶，烧水之前把它擦干净了，烧完水又有了。是因为外壶底沾到水了吗？
[img]https://img.nga.178.com/attachments/mon_202112/30/-7Q2p-xjK25T3cSsg-lc.jpg[/img]
[img]https://img.nga.178.com/attachments/mon_202112/30/-7Q2p-5d17ZbT3cSlc-sg.jpg[/img]
[img]https://img.nga.178.com/attachments/mon_202112/30/-7Q2p-xjK25T3cSsg-lc.jpg[/img]
[img]https://img.nga.178.com/attachments/mon_202112/30/-7Q2p-5d17ZbT3cSlc-sg.jpg[/img]