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【单选题】
关于变异系数的说法错误的是（ ）。
A.
变异系数描述的是获得单位预期收益所承担的风险
B.
变异系数=标准差/预期收益率
C.
资产收益率的不确定可以通过变异系数进行衡量
D.
变异系数越小，投资项目越优
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举一反三
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【单选题】Twenty-five students wererandomly selected from each ethnic group.
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research questions
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D.
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【单选题】—How about going out for a picnic on Sunday morning? —Hmm．___．The weather is very good these days．
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【单选题】Twenty-five students wererandomly selected from each ethnic group.
A.
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【判断题】the weather is very bad today.
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【单选题】Now_____is late autumn and the weather is very cool.
A.
that
B.
it
C.
this
D.
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查看完整题目与答案
【单选题】微血管病性溶血性贫血的发病机制( )
A.
微血管内皮细胞大量受损
B.
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C.
小血管内流血淤滞
D.
微血管内大量微血栓形成
E.
纤维蛋白丝在微血管腔内形成
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