How does VO determine if you should get checked or not? changing

來源: iwant2know 於 2006-01-13 03:52:48 [舊帖] [給我悄悄話] 本文已被閱讀：次

I wonder how VO determines whether you should get checked or not? Changing F1 to H1-B has higher chances to get checked? Please help, thanks a lot.

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