查看nrm镜像列表
nrm ls
npm ---------- https://registry.npmjs.org/
yarn --------- https://registry.yarnpkg.com/
tencent ------ https://mirrors.cloud.tencent.com/npm/
cnpm --------- https://r.cnpmjs.org/
taobao ------- https://registry.npmmirror.com/
npmMirror ---- https://skimdb.npmjs.com/registry/
newnpm ------- http://registry.npmjs.org/
* huaweinpm ---- https://mirrors.huaweicloud.com/repository/npm/刚安装可能不显示华为的镜像，需要手动添加：
nrm add huaweinpm https://mirrors.huaweicloud.com/repository/npm然后选择华为镜像：
nrm use huaweinpm