影响斜板(管)沉淀效果的因素有哪些?
参考答案:
影响斜板(管)沉淀效果的因素有斜板(管)的倾斜角、斜板(管)的长度、斜板间距和斜管管径、斜管中的上升流速。
阅读理解。
Mike is an American. Now he's in No. 8 Junior High School in Tengzhou. He's in
Class 5, Grade 7. Every day he gets up early . He always goes to school in his father's
car. His classes begin at 8: 00 a.m. He has four classes in the morning. He has lunch at
school at about 12: 00 a.m. He has two classes in the afternoon. After school, he goes home
by car at 5: 30 p.m. and has dinner at 6: 30 p.m. After dinner, he does his homework with
his sister and then he plays the guitar for a while. At about 9: 00 p.m. he goes to bed.
1. Where is Mike from?
A. England
B. The U.S.A.
C. Canada
D. Japan
2. How does Mike go to school?
A. By bike
B. By car
C. On foot
D. By train
3. Where does Mike have lunch?
A. At home
B. At school
C. In a shop
D. In a restaurant (饭馆).
4. How many classes does Mike have every day?
A. Six
B. Two
C. Three
D. Four
5. What does Mike do after dinner?
A. He does his homework and plays the guitar.
B. He plays soccer.
C. He watches TV.
D. He goes to bed .
粘土砖的性质是什么?