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【判断题】
反馈式正弦振荡器是由放大器、选频网络和正反馈网络三部分组成的。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Topics for textbooks and conference books should be_______ to the experiences and interests of the students.
A.
relevant
B.
concentrated
C.
reliable
D.
based
【简答题】下列治疗外周血管痉挛性疾病的药物是( )
【简答题】根据梁的支撑情况，将梁进行分类，并简单说明。
【单选题】Why can’t the man copy the topics from the woman’s notes?
A.
Because the woman doesn’t want to lend him the notes.
B.
Because the woman didn’t write down all the topics.
C.
Because the woman never took notes.
D.
Because the woman remembers all the topics.
【简答题】塑性力学的简单问题,包括两类:一类是塑性区应力分布由应力方程和应力边界条件完全确定,因而不用使用非线性本构关系便能得到所求的应力未知量,比如厚壁筒受压问题。还有一类问题是(),即应力状态的六个分量重只有一个不为零的应力分量,此时本构关系简单,求解也简单,比如三杆桁架、圆杆扭转、弯曲梁等。
【单选题】Internet voting happens all the time, but usually it's confined to topics such as 'Who is the cutest east member of Party of Five?' Soon, however, people will be able to cast their ballot (选票) for Pre...
A.
The civic affair enthusiasts take it as a way to increase voter turnout.
B.
Some Internet lovers hope that Internet can change politics.
C.
Some people can make profit from developing software for online voting.
D.
An increasing number of states or cities are considering voting online to help promote Internet voting.
【判断题】The colon is long and divided into the ascending, transverse and descending colon（ ）
A.
正确
B.
错误
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