正常停工时停双烯选择加氢反应器氢气进料（）停油路进料。 A.先于 B.后于 C.同时
题型：单项选择题
问题：
正常停工时停双烯选择加氢反应器氢气进料（）停油路进料。
A.先于
B.后于
C.同时于
D.后半小时
题型：单项选择题
This is my family tree. My name is Bruce. I'm English. I have a big family. My wife, Allen, is a
teacher. We have two children. Dick is my son. Linda is my daughter. They are students in No. 2
High School. My father's name is Robert. My mother's name is Nancy. They are at home. Bill is
my brother. He is a worker. Lucy is my wife's sister. She is a doctor. My wife's mother's name is
Sarah. Her father's name is Ben. They are old, too.
根据短文内容，完成家谱图。
1. ____________ 2. ___________ 3. ___________ 4. ___________ 5. ___________
架上，模拟下颌做前伸运动时，要求排列的全口义齿（）。