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【多选题】
A.
先画共射放大电路的交流通路，如中图所示。
B.
再把图中的三极管用简化h参数等效电路替代，得到放大电路的微变等效电路（如最下图所示）。
C.
放大倍数:
D.
输入输出电阻：Ri=Rb//rbe，Ro=Rc。
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举一反三
【单选题】What did the man think he had given to the woman?
A.
An information card of a restaurant.
B.
His own business card.
C.
Mr. Cooper's business card.
D.
A note of what to do.
【单选题】关于受托代销业务的流程顺序正确的是( )
A.
受托代销入库单——开具销售清单——受托代销结算——受托代销发票
B.
开具销售清单——受托代销入库单——受托代销结算——受托代销发票
C.
受托代销入库单——开具销售清单——受托代销发票——受托代销结算
D.
受托代销发票——受托代销入库单——开具销售清单——受托代销结算
【简答题】There was a man. He had four sons. He wanted his sons to learn not to judge things too quickly. So he sent them each on a quest(探索)in turn, to go and look at a pear tree that was far away. The first s...
【单选题】Why didn't he eat anything?
A.
He had forgotten to bring any food with him.
B.
He was afraid he would fall asleep if he should eat anything.
C.
He was not hungry.
D.
It was difficult to eat while flying a plane.
【单选题】假设test类运行于多线程环境下,那么关于A处的同步下面描述正确的是? public class Test { List list= new java.util.ArrayList(); public void test() { synchronized ( list) { // --A list.add( String.valueOf(System.currentTimeMillis())); ...
A.
test方法中必须增加synchronized。
B.
Test类为singleton时有必要增加synchronized。
C.
test方法中没有必要增加synchronized。
D.
Test类为singleton时也没有必要增加synchronized。
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