问题 名词解释

反向偏置

答案

参考答案:

在三极管电路中,给三极管基极加上一个正或者负的电压,使三极管集电极电流为零,这时加在基极上的正或负电压即称为反向偏置。

问答题
阅读理解与欣赏
[ ]

A.天下之观也       势极

B.则一无迹       仅有“敌”为火所焚

C.吴儿善者数百       迎而上

D.分列两       江上下十余里间

2.选出划线字意义相同的一项

[ ]

A.为:自既望以至十八日盛        仅有“敌船”火所焚

B.天:下之伟观也                      吞沃日

C.百:艨艟数                             腾身

D.而:溯迎上                             僦赁看幕

3.解释划线词的意义。

其远出海门(             )

②每京尹(             )

③为火所(             )

④四马途(             )

4.翻译下面的句子。

①如履平地                                                                                                                                             

②黄烟四起                                                                                                                                             

③略不相睹                                                                                                                                           

④随波而逝                                                                                                                                             

5.简答。

① 能概括全文的一句话是                                                                                                                      

② 第一段中写潮水的顺序是                                                                                                                    

③ 第二段中表现教阅场面宏伟的句子是                                                                                                  

④ 侧面烘托江潮之盛的句子是                                                                                                                

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