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【单选题】
已获得的知识经验在人脑中的巩固过程，是记忆过程的第二个基本环节，这是（）A.
识记
B.
注意
C.
保持
D.
再认和回忆
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】男，50岁，一次朋友聚会饮酒后，夜间出现第一跖趾关节突起，伴红、肿、热、痛，无外伤、无感染史，最可能的疾病是
A.
风湿热
B.
痛风关节炎
C.
腱鞘炎
D.
滑囊炎
E.
骨关节炎
【判断题】The word 'bipolar' , which is in "Bipolar junction transistor" , means that there are two types of charge carrier in the transistor.
A.
正确
B.
错误
【单选题】The difference between the resulting equations for a network in which an npn transistor has been replaced by a pnp transistor is ________
A.
the value of the resistors
B.
the value of
C.
the sign associates with the particular quantities
D.
all of the above
【简答题】In which year, the first transistor was demonstrated?
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