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问题
判断题
虽然直至今日我们仍普遍采用扩散区一词,但是硅片制造中已不再用杂质扩散来制作pn结,取而代之的是离子注入。
答案
参考答案:对
选择题
I told you _____ that car, and now look and see what has happened.
A. not buy
B. not to buy
C. don't buy
D. not buying
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单项选择题
“华盖”指的是哪一脏
A.肝
B.心
C.脾
D.肺
E.肾
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