近代中国睁眼看世界的第一人是（）。 ["林则徐","魏源","郭嵩焘","郑观应"]
Assume that the PEs are separated by Multiple P routers.How many labels should the ingress PE push for BPE functionality？（） ["1","None","3","2","It depends on the numbers of hops between the ingress and egress PE"]
对磷钾类资源要节约、合理利用，是因为它的循环属于（） ["沉积型","气相型","中间型","其它"]
佣书业
记入国际收支平衡表借方的项目有（） ["服务支出","服务收入","对外提供援助","国外资产增加","国外负债增加"]
塔瓦效应
