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【单选题】
电路如图3所示,电路 的时间常数 为( )。 图3A.
3s
B.
6s
C.
9s
D.
-9s
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【简答题】在劳动经济学中所提到在现代市场经济中市场运作的主体是（ ）。
【单选题】You need to base a data block on the EMP table, but you do not want to give the users of the application access privileges on the table. Which type of data source would you use to create the data bloc...
A.
table
B.
transactional trigger
C.
stored procedure
D.
FROM clause query
【单选题】Which sentence is TRUE? _______ Information as a source of power is
A.
Information is the accumulation and presentation of data to change the other person's point of view or position on an issue.
B.
Information is an acknowledged accumulation of information, or mastery of a body of information, on a particular problem or issue.
C.
Information is the accumulation of money, raw material, manpower, time or equipment which can be used to create incentives for other people to comply, or as threats and punishments if they do not comply.
D.
Information is derived from being located in a particular position in an organizational or communication structure.
【判断题】施工现场为预防高处坠落事故发生，保证施工安全的主要措施有，编制预防高处坠落事故的专项施工方案，开展高处作业人员的安全教育及落实相关的安全预防设施的设置。 ( )
A.
正确
B.
错误
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