7、ipmentinstallationengineeringcode(DL/T5161.1-2002~5161.17-2002);1.10thenormsofconstructionsupervision,theelectricpowerconstructionsupervisionregulationsStep3:Presentation1.教学Let’slearn。(1)教师通过课件展示教材图片和相关的5个短语do morning exercises, have English class, eat break