Ⅴ类放射源为极低危险源。不会对人造成永久性损伤。 发布时间:2017-07-28 07:15 │ 来源:www.tikuol.com 题型:判断题 问题: Ⅴ类放射源为极低危险源。不会对人造成永久性损伤。
题型:判断题 They considered ______ a computer ,which was considered ______ a great help in their work.A.to buy , to beB.buying , beingC.to buy , beingD.buying , to be 查看答案