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【判断题】
14标准离差率是用标准离差同期望报酬率的比值,可用于比较期望报酬率不同的各项投资的风险程度,标准离差率越大,风险就越小。
A.
正确
B.
错误
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【单选题】静脉炎的护理中可使用乙醇热湿敷,其浓度宜用
A.
25%
B.
50%
C.
35%
D.
95%
E.
70%
【简答题】如图,把一个平行四边形分成四个部分,已知平行四边形的面积是24平方厘米,三角形a的面积占平行四边形的 1 3 ,则三角形b的面积是______平方厘米.
【简答题】如图是一个平行四边形,图中甲部分面积是15平方厘米,乙部分的面积占整个平行四边形面积的30%.则平行四边形的面积为______平方厘米.
【单选题】听力原文: U.N. Security Council envoys pushing for an end to the Democratic Republic of Congo's almost three-year-old war are praising Congolese President Joseph Kabila for taking steps to resolve the con...
A.
U.N. Secretary Council Envoys.
B.
President Joseph Kabila.
C.
Jean-David Levitte.
D.
President Jose Eduardo Dos Santo.
【单选题】创业的成败可能受多种因素的影响,其中最关键的因素是( )。
A.
资金
B.
环境
C.
创业者
D.
市场需求
【单选题】对于克劳修斯不等式 dS ≥ δQr / T环 ,下列判断不正确的是
A.
dS = δQr / T环 时必为可逆过程或处于平衡状态
B.
dS > δQr / T环 时必为不可逆过程
C.
dS > δQr / T环 时必为自发过程
D.
dS < δQr / T环 时不可能自动发生的过程
【简答题】在氯水中发生下述反应:Cl 2 +H 2 O====H + +Cl - +HClO。已知 (Cl 2 /Cl - )=1.36V, (HClO/Cl 2 )=1.63V,求当Cl 2 的分压为 时,氯水的pH。
【单选题】听力原文: The U.N. International Atomic Energy Agency referred ( 提交;把......提交 使求助于 归诸于) the North Korean nuclear issue to the U. N. Security Council Thursday. The council could consider economic sanctions...
A.
could refer the nuclear issue to the U.N. Security Council
B.
would consider economic sanctions against North Korea
C.
could declare war on North Korea for the nuclear issue
D.
had reported the nuclear issue to the U.N. Security Council
【单选题】听力原文:The U.N. agency says a shortage of roads, rail networks, ports and energy projects in rapidly- growing Asia threatens to hold back the region's economies. At a two-day meeting in New Delhi, the U...
A.
Economies of Asia and Pacific region will remain rapidly-growing in spite of the shortage of infrastructure.
B.
The infrastructure deficit in Asia is highlighted during a two-day meeting by representatives of 12 countries.
C.
A regional United Nations agency says Asia needs to step up investment in infrastructure to maintain the region's high growth momentum.
D.
The U.N. agency suggested Asia to invest in cross-border infrastructure projects.
【简答题】在氯水中发生下述反应:Cl2+H2O===H++Cl-+HClO。已知Eθ(Cl2/Cl-)=1.36 V,Eθ(HCl0/Cl2)=1.63 V,求当Cl2的分压为pθ时,氯水的pH。
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