5533| 11
|
利用自來水壓力可否把2樓的1桶水送上3樓? |
| ||
利用自來水壓力可否把2樓的1桶水送上3樓?
| ||
| ||
| ||
| ||
| ||
| ||
Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
GMT+8, 2025-7-22 23:56 , Processed in 0.089015 second(s), 14 queries , Gzip On.
Powered by Discuz! X3.5 Licensed
© 2001-2025 Discuz! Team.