謝謝大家. 裏麵是1-131的信息
If you stay outside the United States for less than one year, you are not required to apply for a Re-entry Permit. You may re-enter the United States on your Permanent Resident Card (Form I-551).
客服電話更本....沒法打同. 所以還不是很明白啊. 我覺得是不要APPLY PERMIT的.想問一下有人有相同經曆嗎?