错误：
> ("car")
Warning in :InternetOpenUrl failed: ''
Warning in :
InternetOpenUrl failed: ''
Warning in :
unable to access index for repository /src/contrib:
cannot open URL '/src/contrib/PACKAGES'
Warning in :
InternetOpenUrl failed: ''
Warning in :
InternetOpenUrl failed: ''
Warning in :
unable to access index for repository /pub/RWin/src/contrib:
cannot open URL '/pub/RWin/src/contrib/PACKAGES'
Warning in :
InternetOpenUrl failed: ''
Warning in :
InternetOpenUrl failed: ''
Warning in :
unable to access index for repository /src/contrib:
cannot open URL '/src/contrib/PACKAGES'
Warning in :
InternetOpenUrl failed: ''
Warning in :
InternetOpenUrl failed: ''
Warning in :
unable to access index for repository /pub/RWin/src/contrib:
cannot open URL '/pub/RWin/src/contrib/PACKAGES'
Warning in :
package ‘car’ is not available (for R version 3.3.1)
Warning in :
InternetOpenUrl failed: ''
Warning in :
InternetOpenUrl failed: ''
Warning in :
unable to access index for repository /bin/windows/contrib/3.3:
cannot open URL '/bin/windows/contrib/3.3/PACKAGES'
Warning in :
InternetOpenUrl failed: ''
Warning in :
InternetOpenUrl failed: ''
Warning in :
unable to access index for repository /pub/RWin/bin/windows/contrib/3.3:
cannot open URL '/pub/RWin/bin/windows/contrib/3.3/PACKAGES'
正确 解决方法：
R语言镜像访问貌是通过IE浏览器，所以查看IE浏览器是否可以连上网，往往问题出在IE浏览器不能连网。将IE浏览器重新修复(方法参照百度)后加载安装包就能成功运行了，顺利加载。