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【判断题】
的思想更倾向于唯心主义。()A.
正确
B.
错误
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举一反三
【单选题】Passage 3 Questions 11 to 15 are based on the following passage: In the United States elementary education begins at the age of six. At this stage nearly ail the teachers are women, mostly married. (7...
A.
sensible and sensitive
B.
competitive and interested
C.
curious and friendly
D.
happy and co-operative
【单选题】Meredith Jones was a schoolteacher, passionate, fluent, something of a scholar, roughly gentle, of remarkable vitality and afraid of nobody. His stage was an elementary school in Wales, leaky and many...
A.
commemorate his teacher
B.
recommend this teacher
C.
recall his school days
D.
describe his school life
【简答题】阅读理解。 'A good parent' can be a confusing phrase. It is almost impossible for one person to be 'a good parent' at all stages of a child's life. Some parents are at their best before their children begi...
【单选题】在视频中的仿真电路中,我们看到里二极管符号,如下图所示。我们指导二极管具有单向导电性,即电流可以从二极管的正端流向负端。那么该二极管符号中,()是二极管的正极。
A.
左边（即符号中三角形指向的方向为负极）
B.
右边
C.
都不是
【简答题】正向特性在电子电路中,将二极管的正极接在高电位端,负极接在低电位端,二极管就会导通,这种连接方式,称为__________。必须说明,当加在二极管两端的正向电压很小时,流过二极管的正向电流十分微弱,二极管仍然__________导通。只有当正向电压达到某一数值(这一数值称为“__________”,锗管约为__________V,硅管约为__________V),二极管才能导通。导通后二极管两端的...
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