转子的不平衡离心力的大小与()成正比,波幅与不平衡重量的大小成()
A.转速,正比
B.转速平方,正比
C.转速立方,正比
D.转速,反比
参考答案:B
用单词的正确形式填空
1. Mary is much _(outgoing)than Betty.
2. I wish to speak English as _ ( well) as you.
3. My father used to ( smoke) a lot, but now he doesn't smoke anymore.
4. David jumped the _ ( high) of all boys.
5. Don't give up _ ( work) hard. You'll succeed soon.
某无牙颌患者,上下颌弓位置关系正常,牙槽嵴丰满,上颌相当于牙槽嵴唇侧尖锐骨尖。此患者在全口义齿修复前需进行:()
A.唇颊沟加深
B.上颌结节修整
C.牙槽骨修整
D.唇系带修整
E.近缺隙侧和远缺隙侧都大