Briefly explain the reason, process and degree of achievement of my thesis writing. Praise the teacher's high quality and express his reverence. I'm not sure about my thesis, so please ask the teacher for advice. I really appreciate the teacher's concern for you all the time, and look forward to passing the paper smoothly under the guidance of the teacher. You will always remember your teacher's kindness.

For example, thank you for your busy schedule to review my paper and listen to your suggestions. I have revised a lot of shortcomings in my paper, and I can finish it smoothly thanks to your help. Thank you, teacher.

Transmission process

The delivery order of mail is divided into four links: receiving and sending, sorting and sealing, and transportation and delivery. Receiving and mailing methods are mainly to set up mailboxes, mailboxes and direct receiving and mailing in the post office business window. Sorting and sealing is to separate the mail according to the sending place, and then seal the sorted mail into mail packages (bags, sets) for shipment. Transportation is the general contractor who transports the mail to the destination through the designated postal route.

There are two delivery methods: address delivery and post office delivery. Undeliverable messages are usually returned to the sender. Undeliverable and unreturnable mails are dead letters, which are opened centrally by designated institutions. If clues can be found, they will be returned, and those that are not dead will be stored for a certain period of time and destroyed or otherwise disposed of.