下列灯具中,有害紫外线辐射较大的是()。A.汞氙灯 B.白炽灯 C.日光灯 D.碘钨 发布时间:2017-07-09 14:37 │ 来源:www.tikuol.com 题型:单项选择题 问题: 下列灯具中,有害紫外线辐射较大的是()。A.汞氙灯B.白炽灯C.日光灯D.碘钨灯
题型:单项选择题 But for the leadership of our Party and our Government, we __________ these splendid results.A.have achievedB.shouldn’t have achieved C.should have achievedD.would achieve 查看答案