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【多选题】
下列关于74LS00描述对的是A.
是四-二输入或非门集成电路
B.
是四-二输入与非门集成电路
C.
面对集成电路的文字面，集成块上的半圆形标注，起，逆时针依次是1,2,3，…管脚
D.
面对集成电路的文字面，集成块上的半圆形标注，起，逆时针依次是1,2,3，…管脚
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反馈参考答案：
举一反三
【单选题】Why is the woman asking for the man's assistance?
A.
He used to be a psychologist.
B.
He wrote a book on the subject.
C.
He studied the topic in university.
D.
He is a stock analyst.
【单选题】What's the problem, Harry?-()
A.
No problem
B.
No trouble at all
C.
Thank you for asking me about it
D.
I can't remember where I left my glasses
【单选题】应用标准套筒滚子链传动的额定功率曲线,必须根据_____来选择链条的型号和润滑方法。
A.
链条的圆周力和传递功率
B.
小链轮的转速和计算功率
C.
链条的圆周力和计算功率
D.
链条的速度和计算功率
【单选题】— He works quite hard. — Maybe you don't know that he always ____ without asking for leave when he ____ in another company. [ ]
A.
went to work; was
B.
goes to work; is
C.
didn't go to work ; was
D.
doesn't go to work; is
【判断题】He's asking you to look at both sides of the case and come to an emotional decision.
A.
正确
B.
错误
【简答题】He's asking you to look at both sides of the case and come to a decision. (reasonable)
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