变量液压马达轻载工作时其每转排量应:().
A.取较小值
B.取较大值
C.按转速需要取
D.按输出功率需要取
参考答案:A
患者女,19岁,颏部发育差,唇前突闭合不全,覆盖10mm,磨牙完全远中关系,前牙深覆牙合,ANB10°,上前牙前突,牙列无拥挤4个第三磨牙牙胚不存在 。
对此患者诊断为 ()
A.单纯的牙列重度拥挤
B.安氏Ⅰ类错牙合
C.安氏Ⅱ类1分类
D.安氏Ⅲ类错牙合
E.单纯的前牙深覆牙合
改写同义,每空一词。
1. How is the weather?
____ ____ the weather ____?
2. What can I do for you?
____I____ you?
3. I ride my bike to the shop.
I go to the shop ____ ____.
4. What's the price of the coat?
____is the coat?
5. I want a cup of tea.
I____ ____a cup of tea.