【判断题】
A、用敲锈锤铲去重锈。 B、用敲锈锤铲去起泡的油漆和锈皮。 C、用刮刀铲去起泡的油漆和锈皮。 D、用刮刀铲去重锈。
A、Loose paint and scale is removed with a scraper. B、Heavy rust is removed with a scraper. C、Loose paint and scale is removed with a chipping hammer. D、Heavy rust is removed with a chipping hammer.
A、拉线开关距地面高度2~3米 B、拉线开关距地面高度1.8~2米 C、墙边开关距地面高度1.3~1.5米 D、墙边开关距地面高度1米 E、每一单相回路胶壳开关和自动开关一般为1.8~2米