Postal enterprises shall inform the Customs of their business hours in advance, and the Customs shall promptly send officials to supervise on-the-spot checking and examination.

邮政企业应当将作业时间事先通知海关，海关应当按时派员到场监管查验。

If a bonded warehouse fails to participate in the annual examination or fails the annual examination, the customs office shall write off its registration and withdraw its Registration Certificate.

保税仓库不参加年审或者年审不合格的，海关注销其注册登记，并收回《保税仓库注册登记证书》。

The customs shall send a written notification to the duty payer upon the completion of such pre-examination and determination and acknowledge its validity when the real act of import or export occurs.

海关审核确定后，应当书面通知纳税义务人，并在货物实际进出口时予以认可。

The consignee for import goods and the consignor for export goods shall make an accurate declaration and submit the import or export license and relevant papers to the Customs for examination.

进口货物的收货人、出口货物的发货人应当向海关如实申报，交验进出口许可证和有关单证。

From this, should understand clearly: No matter be habits and customs, or it is study method because take an examination of, grind impossibly and the change is very big.

由此，应该清楚地明白：无论是生活习惯，或是学习方法不可能因为考研而改变甚大。