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[] 请教大虾们：B1一般签多久？现在B1签证可以转F1吗？在到美国后再申请155232 2006-01-23 07:37:48[] How long does H-1B renewal take in VSC?155232 2006-01-13 06:19:22[] Tricky question on AP and I-485155232 2005-12-19 13:03:19