碳素钢的分类的依据是( ) A.硬度 B.含碳量 C.用途 D.机械性能 发布时间:2017-07-23 04:39 │ 来源:www.tikuol.com 题型:选择题 问题: 碳素钢的分类的依据是( )A.硬度B.含碳量C.用途D.机械性能
题型:选择题 She had just______the shell of the hard-boiled egg and was starting to peel it off.A.snappedB.crackedC.fracturedD.burst 查看答案