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【单选题】
看图回答问题。电源使用过程中,首先应打开哪一个开关?A.
1号开关
B.
2号开关
C.
3号开关
D.
4号开关
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反馈参考答案：
举一反三
【单选题】Why did Dave fail to impress at his meeting with a Nike accountant?
A.
He didn’t seem to have a clear idea of the types of job he could do for Nike.
B.
He asked too many questions about Nike’s communications department.
C.
He told the Nike employee directly what type of job he would like to do at Nike.
D.
He told the Nike employee that he would like to talk to someone else at Nike.
【单选题】要设计由一个灯泡和3个开关A,B,C组成的电路,要求在且仅在下述4种情况下灯亮: (1)C的扳键向上,A,B的扳键向下。 (2)A的扳键向上,B,C的扳键向下。 (3)B,C的扳键向上,A的扳键向下。 (4)A,B的扳键向上,C的扳键向下。 设F为1表示灯亮,p,q,r分别表示A,B,C的扳键向上。 求F的主析取范式。
A.
m0∨m3∨m4∨m6
B.
M1∨M3∨M4∨M6
C.
m1∧m3∧m4∧m6
D.
m1∨m3∨m4∨m6
【简答题】Nike is a major of the Olympics. A) spencer B) speeder C) sponsor D) speaker
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