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【单选题】
用电压表测量一个负载上的电压降的方法是 ( ).。A.
接红表笔到蓄电池的正极接线柱，接黑表笔到一个已知良好的接地端。
B.
接红表笔到负载正极端，黑表笔到负载接地端。
C.
接红表笔到负载正极端，黑表笔接到一已知良好的接地端。
D.
接红表笔到蓄电池正极接线柱，黑表笔到负载蓄电池端。
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反馈参考答案：
举一反三
【简答题】所谓高级消费,主要是就 和 而言。
【简答题】蒸发法和溅射法制备薄膜材料时各自的优势有哪些?
【判断题】Tom finds an article written in Chinese that fits his topic well, then he translates it to English and turns it in to his American teacher without citing the Chinese author. His teacher does not speak...
A.
正确
B.
错误
【单选题】Tom finds an article written in Chinese that fits his topic well, then he translates it to English and turns it in to his American teacher without citing the Chinese author. His teacher does not speak...
A.
True
B.
False
C.
Omitted
D.
Null
【判断题】Tom finds an article written in Chinese that fits his topic well, then he translates it to English, turns it in to his American teacher, and cites the Chinese author. This is not plagiarism.
A.
正确
B.
错误
【判断题】Tom finds an article written in Chinese that fits his topic well, then he translates it to English, turns in into his American teacher, and cites the Chinese author. This is not plagiarism.
A.
正确
B.
错误
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