铸锭组织的表层是()。 A.细晶区 B.柱状晶区 C.等轴晶 D.树枝晶 发布时间:2019-02-17 08:55 │ 来源:www.tikuol.com 题型:单项选择题 问题: 铸锭组织的表层是()。A.细晶区B.柱状晶区C.等轴晶D.树枝晶
题型:单项选择题 The first decade in the 21st century is the one ______ many significant advances are made in China.A.thatB.in whichC.whichD.where 查看答案