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【简答题】
列宁说：“意识到自己的奴隶地位而与之作斗争的奴隶，是革命家。没有意识到自己的奴隶地位而过着默默无言、浑浑噩噩、忍气吞声的奴隶生活的奴隶，是十足的奴隶。对奴隶生活的各种好处津津乐道并对和善的好主人感激不尽以至垂涎欲滴的奴隶是奴才，是无耻之徒。”这三种奴隶的思想意识之所以有如此巨大的差异，是由于（ ）。
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举一反三
【单选题】Treasury bills do not _________
A.
pay interest.
B.
have a maturity date.
C.
have a face amount.
D.
have an active secondary market.
【单选题】Which of the following is a characteristic of Treasury bills?
A.
They are coupon instruments
B.
They are short-term debt instruments issued by major corporations
C.
They are discount securities
D.
They have more risk than other money market securities
E.
All the options are characteristics of Treasury bills
【简答题】设总体 ,其中 未知, ,则 的矩估计量
【单选题】The only disadvantage of investing Treasury bills is that ______.
A.
the liquidity is not satisfactory
B.
the return is not satisfactory
C.
the investment is not so safe
D.
the investment is not exempt from state taxes
【单选题】As some treasury bills do not actually pay interest, they are not attractive to investors.
A.
Right
B.
Wrong
C.
Doesn't say
【单选题】Which of the following statements are true of Treasury bills?
A.
The market for Treasury bills is extremely deep and liquid.
B.
Occasionally, investors find that earnings on T-bills do not compensate them for changes in purchasing power due to inflation.
C.
By volume, most Treasury bills are sold to individuals who submit noncompetitive bids.
D.
All of the above are true.
E.
Only (a) and (b) of the above are true.
【简答题】设总体 的分布函数为 ,其中未知参数 , 为来自总体 的样本,则 的矩估计量为( ), 的极大似然估计量为( )
【简答题】设总体 ,其中未知参数 , 是 的样本,则 的矩估计为 , 样本似然函数为 .
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