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【简答题】
N 型半导体是在本征半导体中掺入极微量的 价元素组成的。这种半导体内的多数载流子为 。
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皮皮学刷刷变学霸
举一反三
【单选题】What information does the woman request?
A.
The man's visa number
B.
The man's nationality
C.
The man's previous phone number
D.
The man's identification number
【单选题】-- What's that man? -- __________. [ ]
A.
He's John
B.
Yes, it's a man.
C.
It's John
D.
He's a worker.
【单选题】What's wrong with the man?
A.
The man's got a headache.
B.
The man's got a backache.
C.
The man's got a high fever.
D.
The man's got a cold.
【单选题】One man’s meat is another man ’s poison. Everyone has different ideas about what is ()(可食用的) and what is inedible.
A.
eating
B.
consuming
C.
edible
D.
advisable
【单选题】听力原文：F: What's that man?M: He's our new English teacher. What subject does the man teach?
A.
English.
B.
Maths.
C.
Chinese.
【简答题】在研究一个分析方法时，通常用三项指标来评价。 ( )A. 灵活度B. 灵敏度C. 精密度D. 准确度
【简答题】What is the main idea of the man's speech?
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