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【判断题】
22完全不含杂质且无晶格缺陷的纯净半导体称为本征半导体。A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
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【简答题】我国的邻国共有几个?
【单选题】When transferring solution with a pipet, the correct operation to release solution is
A.
The pipet is inserted into the receiving container and removed as soon as the solution flows out naturally
B.
The pipet is vertical and the pipet tip is against the inner wall of the receiving container. After the solution flows out naturally, stop at least 30s and then move away.
C.
The pipet is vertical and the pipet tip is against the inner wall of the receiving container. After the solution flows out naturally, stop at least 5s and then move away
D.
The pipet is vertical, the solution flows out naturally and then stops for 15s, then moves away
【简答题】摄影测量中常用的坐标系有哪些?各坐标系的坐标原点和坐标轴是如何选择的?
【简答题】输液(infusion solution)
【简答题】摄影测量中常用的坐标系有哪些？各有何用？
【简答题】摄影测量中常用的坐标系统有哪些？