5速手自排AT的油泵设计为（）
A.叶片式泵
B.径向活塞泵
C.转子式泵
D.新月型泵
参考答案：C
单词拼写。
1. The small boy can only _____ (数) to ten.
2. To my _____ (惊讶), my mum comes back so early.
3. Wang Ping tries to _____(表演) at my birthday party.
4. They are watching a _____(网球) match on TV.
5. Do you enjoy _____(划) a boat?
有促进生长发育，并是形成视紫质所必需的维生素是（）
A.维生素A
B.维生素B
C.维生素C
D.维生素D
E.维生素E
