在金属表面形成一层保护膜从而抑制腐蚀作用的过程叫()。
参考答案:预膜
妇人产后具有下列那些显著的特点()
A.多瘀证
B.多热证
C.多虚证
D.多实证
E.易外感
Directions :
Your company is planning to hold a meeting in a hotel. Write a letter to the hotel manager to
1) book a conference room and
2) ask them to make some necessary preparations.
You should write about 100 words on ANSWER SHEET 2. Do not sign your own name at the end of the letter. Use "Li Ming" instead. You don’t have to write the address.