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键盘用于实现单片机应用系统中的（）和（）的输入。

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为什么要进行按键消抖按键消抖的方法有几种

2、苯巴比妥连续用药产生耐药性的主要原因是

A. 重新分布，贮存于脂肪组织
B. 被血浆中假性胆碱酶迅速水解破坏
C. 以原形经肾脏排泄加快
D. 被血浆中单胺氧化酶迅速水解破坏
E. 诱导肝药酶使自身代谢加快

地西泮抗焦虑作用的主要部位是

A. 中脑网状结构
B. 下丘脑
C. 纹状体
D. 边缘系统
E. 大脑皮质

Use the following words to complete the sentences.conveyretreatsanctuaryproliferateextolemblemelitereclusive1. In ancient China, the painters were trained not only to the objects, but also to express the mood and the spirit of the subject.2. The lives of Taoist poets expressed their ideals free from vulgarity and their pursuit of artistic life.3. In Chinese paintings, the bat is a(n) of good fortune.4. None of this can deny his position in traditional Chinese painting.5. In recent years, with the __ of commercial, cultural, travel and other exchanges between east and west, Chinese landscape painting has become increasingly known to the world.6. Many people _ the boy’s art potential and believed him to be a first-class painter in the future.7. Art could offer those scholar-officials a when they felt disappointed with their political career.8. It is generally believed that art can allow people to____ from the harsh realities of life.