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【单选题】
主题阅读是( ),是所有阅读最复杂、最系统化的一种。主题阅读不是针对一本书的阅读,而是需要阅读多本谈到同一主题的图书,因此,主题阅读也可称为比较阅读。A.
最低层次的阅读方式
B.
最高层次的阅读方式
C.
最低层次的论断方式
D.
最高层次的创造方式
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【简答题】A young boy was hungry for success. For him, winning was everything. One day, the boy was preparing himself for a running competition in his small village. He was to compete with two other young boys....
【单选题】双闭环直流调速系统中,给定电压Un*不变,增加转速负反馈系数a,系统稳定后转速反馈电压Un和实际转速n是增加、减小还是不变?控制电压Uc如何变化?
A.
Un不变，转速n增大，控制电压Uc增大。
B.
Un不变，转速n减小，控制电压Uc减小。
C.
Un增大，转速n不变，控制电压Uc减小。
D.
Un减小，转速n不变，控制电压Uc不变。
【简答题】完形填空。 One day, a boy had a fight with one of his classmates. Then he went to his 1 and told him his story angrily.'He is really bad,' the boy said,'and I 2 him.' The grandfather said,' 3 me tell you...
【简答题】Long ago there was a boy who was hungry for success. For him winning was .One day the boy was to run in a race in his village. Many people got together to Among the crowd was a wise old man. The race ...
【简答题】电路如图所示,试回答下列问题: (1) 电路中引入了哪种组态的交流负反馈; (2) 该种组态的交流负反馈对输入电阻和输出电阻有何影响,只须说明增大还是减小即可; (3) 求反馈系数; (4) 求深度负反馈条件下的电压放大倍数。
【简答题】Long ago there was a boy was hungry for success. For him, winning was .One day the boy was to compete with two other young boys in a race in his village. A large crowd gathered to including a wise old...
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