net framework 4.0安装时提示产生阻滞问题:运行安装程序前，必须安装Windows 映像处理组件WIC
32位版http://www.microsoft.com/downloads/en/details.aspx?FamilyID=8e011506-6307-445b-b950-215def45ddd8
64位版http://www.microsoft.com/downloads/en/details.aspx?FamilyID=f64654ac-6e26-41d9-a90a-0e7783b864ee
中文是wic_x86_chs.exe
英文是wic_x86_enu.exe