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【单选题】
下列情况中表达错误的是( )。A.
标准麻花钻头的两个主切削刃有对称度要求
B.
轴上加工键槽的两个工作面有对称度要求
C.
900V型架的两个斜面只要保证夹角为900就可以，无对称度要求
D.
三爪卡盘的三个卡爪有对称度要求
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反馈参考答案：
举一反三
【单选题】固定桥修复中其固位力主要取决于（）
A.
固位体与基牙摩擦力的大小
B.
各轴面向切 方聚合度大小
C.
对颌牙咬合力量的大小
D.
固位体组织面面积的大小
E.
两侧基牙长轴倾斜度的大小
【简答题】（C） Bali is a tiny island that is part of Indonesia(印度尼西亚) today. It is a pretty island that has many mountains and a pleasant climate. For a long time, Bali was cut off from much of the world. The pe...
【单选题】Which of the following is true in Bali bombings case?
A.
Visitors to Bali bounced back immediately after the bombings.
B.
The Swedes who died in the bombings outnumber any other nationalities.
C.
Just in 2 years, the number of Australian visitors to Bali has reached its peak.
D.
Not all the victims in the bombings are westerners.
【单选题】Festivals are held on Bali__________
A.
on such important occasions as births, marriages and deaths
B.
whenever people would like to have one
C.
on fixed dates
【单选题】Bali is a tiny island that today is part of Indonesia. It is a pretty island that has many mountains and a pleasant climate. For a long time, Bali was cut off from much of the world. The people of Bal...
A.
India
B.
Africa
C.
Asia
D.
America
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