发布时间:2025-01-31 11:28:08
这道题的正确答案是B。我们常用的照明电压是交流220V,
我们常用的变压器是三相四线制的,而它的输出相电压只有220V,我们常用的照明电是一根零线一根相线是属于相电压。
3dmax入户门材质参数是什么3dmax入户门材质参数怎么调才很真实
2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:08 2025-01-31 11:28:0860电热水器烧水要多久 60l容量电热水器需要多长时间烧开水
2025-01-31 11:28:08