发动机实现工作循环、完成能量转换的主要运动部件是()。
A、曲柄连杆机构
B、燃油供给系统
C、启动系统
D、汽车配气机构
参考答案:A
回答下列问题。
1. When is your birthday?
_____________________
2. What color is Tom's T-shirt?
3. Can her parents play volleyball?
4. Where does Li Ming do his homework?
5. What time is it?
6. What's your favorite subject?
气管切开的部位一般在()
A.第1~2气管软骨环
B.第3~5气管软骨环
C.第6~7气管软骨环
D.第8~10气管软骨环
E.低于第10气管软骨环