16 世纪到 18 世纪中期,英国逐渐形成一种现象,工人工资水平高得惊人,而煤炭...

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【单选题】

16 世纪到 18 世纪中期,英国逐渐形成一种现象,工人工资水平高得惊人,而煤炭的价格却极为便宜。于是,各行各业都绞尽脑汁来开发尽可能多投入资本,多消耗煤炭,少雇用工人的新技术。这一现象反映了英国

行业垄断的初始形成

近代化启动对煤炭的依赖

劳资矛盾的日渐尖锐

动力革命启动的独特条件

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举一反三

【简答题】The average code length for an information source S is strictly less than __________.

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【简答题】英文字符a所对应的ASCII码是( )。

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【简答题】Consider a code that satisfies the suffix condition: No codeword is a suffix of any other codeword. (i) Is this a uniquely decodable code? Why? (ii) Can you relate the minimum average length of Suffix...

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【单选题】In the relation of tblHire (Loan_Num, ember_Id,Video_Code,Hire_Period, Issue_Date,Due_Date,Return_Date, Reminded,Fine,Paid), Which SQL statements can find the average fine(s) by member where the avera...

select Member_Id , AVG ( Fine ) as Average_Fine from tblHire group by Member_Id where AVG ( Fine )> 16 ;

select Member_Id , AVG ( Fine ) as Average_Fine from tblHire group by Member_Id having AVG ( Fine )> 16 ;

select Member_Id , average ( Fine ) as Average_Fine from tblHire group by Member_Id having average ( Fine )> 16 ;

select Member_Id , AVG ( Fine ) as Average_Fine from tblHire order by Member_Id having AVG ( Fine )> 16 ;

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【多选题】根据支付结算法律制度的规定，下列银行结算账户中不得支取现金的有（）。

一般存款账户

期货交易保证金账户

证券交易结算资金账户

单位银行卡账户

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【多选题】【18•多选题】下列银行结算账户中不得支取现金的有:

一般存款账户

单位银行卡账户

财政预算外资金专户

证券交易结算资金

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【简答题】?LEN(“计算机”)＜LEN(“COMPUTER”)=【】。

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【单选题】What will be the output of the following Python code? a=["Apple","Ball","Cobra"] a.sort(key=len) print(a)

[‘Apple’, ‘Ball’, ‘Cobra’]

[‘Ball’, ‘Apple’, ‘Cobra’]

[‘Cobra’, ‘Apple’, ‘Ball’]

Invalid syntax for sort()

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select Video_Code,AVG(Fine) as Average_Fine from tblHire group by Video_Code where AVG(Fine)>24;

select Video_Code , AVG ( Fine ) as Average_Fine from tblHire group by Video_Code order by Video_Code having AVG ( Fine )> 24 ;

select Video_Code , AVG ( Fine ) as Average_Fine from tblHire where Fine > 24 ;

select Video_Code , AVG ( Fine ) as Average_Fine from tblHire group by Video_Code having AVG ( Fine )> 24 ;

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【简答题】Determine Θ for the following code in the average case. Assume that all variables are of type int.

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