发布时间:2025-02-01 10:05:25
2度电。电功率的单位是千瓦/时,功率2000瓦的电器是说每小时用的电量是两千瓦,也就是每小时耗电2个千瓦,即2度电。
砖混结构的住宅原来的门洞是700宽我想开成1400宽的门洞做成滑门这样在砖混结构承重有影响吗
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