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【多选题】
有关固定桥稳定性的正确描述是（ ）A.
前牙牙弓突度大时，稳定性好
B.
增加基牙数，可减轻杠杆作用
C.
后牙双端固定桥的稳定性好于前牙
D.
固定桥易产生杠杆作用
E.
稳定性与密合度关系不大
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反馈参考答案：
举一反三
【单选题】Which of the following statement is NOT true?
A.
More people went shopping on Dee. 20th than on Dec. 22nd according to Ed Nally.
B.
On Dec. 24th, people were crowded outside Boston's Copley Mall, but they were happy.
C.
Dec. 24th was the sixth busiest holiday shopping day in 1997.
D.
One can buy brightly colored plastic watches in Swatch Store.
【单选题】Shopping habits in the United States have changed greatly in the last quarter of the 20th century. 【C1】______in the 1900s most American towns and cities had a Main Street. Main Street was always in th...
A.
As early as
B.
Early
C.
Early as
D.
Earlier
【单选题】理想的集成运算放大器输入端是“虚断”是因为()
A.
输入电阻无穷大，输入电流为零
B.
增益无穷大，输入电流为零。
C.
输出电阻无穷大，输入电流为零
D.
共模抑制比无穷大，输入电流为零
【单选题】不可控相复励主要类型不包括下面的__类型。
A.
带电压曲折绕组的电磁叠加不可控相复励自励恒压装置
B.
带电流曲折绕组的电磁叠加不可控相复励自励恒压装置
C.
电磁迭加不可控相复励自励恒压装置
D.
电流迭加不可控相复励自励恒压装置
【单选题】Shopping habits in the United States have changed greatly in the last quarter of the 20th century.【C1】______ in the 1900s most American towns and cities had a Main Street. Main Street was always in th...
A.
As early as
B.
Early
C.
Early as
D.
Earlier
【简答题】不可控相复励主要类型不包括下面的类型______。
相关题目：
【单选题】理想的集成运算放大器输入端是“虚断”是因为()
A.
输入电阻无穷大，输入电流为零
B.
增益无穷大，输入电流为零。
C.
输出电阻无穷大，输入电流为零
D.
共模抑制比无穷大，输入电流为零
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