题目内容

某项目第一年初投入１０万元，第二年末投入５万元，第三年初投入１万元，第四年初投入２万元。该过程的现金流量图为（）。

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设函数f(x)在[a，b]上等于sinx，在此区间外等于零，若f(x)可以作为某连续型随机变量的概率密度，则区间[a，b]应为（）

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A．speechesB．soundsC．wordsD．voices

A. speeches
B. sounds
C. words
D. voices

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What conclusion can be drawn from the passage？

A. The organization for the Olympic Games must be improved.
B. Athletes should compete as individuals in the Olympic Games.
C. Sport should be played competitively rather than for the love of the game.
D. International contests are liable for misunderstanding between nations.

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The design of the sink is indicative of a kitchen designer's intelligence.

A. Right
B. Wrong
C. Not mentioned

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