近年来,随着新课改的推进,历史中考中出现了信息技术与历史知识整合类试题。这样的试题贴近广大学生的生活,令人耳目一新。 例l(2008年徐州市中考试题)互联网给我们的学习带来了极大的方便,假如你在百度搜索引擎中输入“马关条约”、“通商口岸”、“双十协定”这三个关键词,最有可能出现的城市是 ( ) A 南京 B 北京 C 苏州 D 重庆 解析:本题利用百度搜索引擎进行命题,不但考查了信息技术学科
Oil-soluble stannous naphthenate (SN) is synthesized by using naphthenatic acid and SnO. And its molecular structure is confirmed by IR and multielement oil ana
This paper is intended to study the volume-preserving procrustes problem arising from practical areas. The correspondingsolution should satisfy a matrix equatio
A novel stereolithgraphy system with conventional UV light as a light source uses the 2D worktable as moving components,whose characteristics determine the accu