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【单选题】
将或非门电路的所有输入端连接在一起,可实现的逻辑功能为A.
或非
B.
或
C.
非
D.
与非
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反馈参考答案：
举一反三
【单选题】Before writing your name, how can you sign off your email?
A.
Ciao!
B.
Laters,
C.
Bye,
D.
Best regards,
【简答题】Before writing your article， ______， collect your material， and prepare an outline. B.a topic should be selected C.a topic to be selected D.your topic should be selected E.select a topic
【单选题】Before writing your article, ____, collect your material and prepare an outline.
A.
a topic should be selected
B.
a topic be selected
C.
your topic should be selected
D.
select a topic
【单选题】Before writing your answer, please give careful __ t o the question．
A.
consideration
B.
translation
C.
examination
D.
expression
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