生产经营单位采用( ),必须了解、掌握其安全技术特性,采取有效的安全防护措施,并对 发布时间:2022-10-08 18:08 │ 来源:www.tikuol.com 题型:多项选择题 问题: 生产经营单位采用( ),必须了解、掌握其安全技术特性,采取有效的安全防护措施,并对从业人员进行专门的安全教育和培训。A.新工艺B.新技术C.新材料D.新设备E.新观念
题型:多项选择题 用方框中所给单词的适当形式填空,使短文完整正确。(每个单词限用一次)ready, wish, favourite, come, together, envelope, clean, festival, have, eat We have many 小题1:__________ in China. Every festival 小题2:_______ a long history. Like most Chinese people, my 小题3:___________ festival is the Spring Festival. It 小题4:_________ in January or February. People are 小题5:________ for it for a long time. We do some 小题6:_________ and cook a lot of delicious food. On the eve of the Spring Festival, we all wear new clothes and go to grandparents’house. Families get 小题7:_________ to have a good time. We are happy 小题8:________ dumplings and many delicious food. After dinner, we set off firecrackers(燃放爆竹).The children can get red 小题9:____________ and they give best小题10:__________ to their grandparents. Everyone is very happy. 查看答案
题型:多项选择题 要得到函数y=f(﹣x+3)的图象,只需将y=f(x)的图象[ ]A.先向右平移3个单位,再作关于y轴对称的图象 B.先作关于y轴对称的图象,再向左平移3个单位 C.先向左平移3个单位,再作关于y轴对称的图象 D.先作关于x轴对称的图象,再向右平移3个单位 查看答案