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【单选题】
世界上首台PLC诞生于哪一年?A.
1967
B.
1968
C.
1969
D.
1970
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反馈参考答案：
举一反三
【单选题】若要在电路板编辑区里放置层名称,可以使用哪个一个功能变量?
A.
Print_Output name
B.
layer Name
C.
File Name
D.
File Path
【单选题】A graph, or a ____ as it is known in Microsoft Excel, is a visual representation of worksheet data.
A.
chart
B.
table
C.
diagram
D.
map
【简答题】Excel is a ___________ program.
【单选题】What is a possible pitfall of utilizing Excel as a way to manipulate small databases?
A.
Excel does not enforce many principles of relational data models.
B.
Excel is a user program and thus cannot run on a server.
C.
Excel does not allow algorithms for data manipulation.
【单选题】Microsoft Excel is an example of:
A.
data management software
B.
presentation graphics.
C.
spreadsheet software.
D.
word processing software.
【单选题】●A (72) is a file that contains metadata—that is，data about data. (72)
A.
document
B.
Excel table C. database D．data dictionary
【单选题】若要在电路板编辑区里放置板层名称,可使用哪一个功能变数?
A.
.Print_Output name
B.
.Layer Name
C.
.File Name
D.
.File Path
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