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问题
判断题
场效应管的低频跨导是描述栅极电压对漏极电流控制作用的重要参数,其值愈大,场效应管的控制能力愈强。
答案
参考答案:
对
选择题
He came to a point _____ there was no more road to follow, and before him he could see nothing but a thick
forest.
A. that
B. what
C. which
D. where
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填空题
轧辊的强度条件是轧辊各处的计算应力应()许用应力。
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