某街道常住人口与外来人口之比为1:已知该街道下辖的甲、乙、丙三个社区人口比为12:8:7。其中,甲社区常住人口与外来人口比为l:乙社区为3:则丙社区常住人口与外来人口比为()
A.1:2
B.1:3
C.2:3
D.3:4
A.1:2
B.1:3
C.2:3
D.3:4
B. 1∶2
C. 1∶3
D. 3∶4
该投资组合的β系数为()。A.0.15
B.0.8
C.1.0
D.1.1
投资者在投资甲股票时所要求的均衡收益率应当是()。A.4%
B.9%
C.11.5%
D.13%
下列说法中,正确的是()。A.甲股票所含系统风险大于甲、乙、丙三种股票投资组合风险
B.乙股票所含系统风险大于甲、乙、丙三种股票投资组合风险
C.丙股票所含系统风险大于甲、乙、丙三种股票投资组合风险
D.甲、乙、丙三种股票投资组合可以消除政治因素引起的风险
关于投资组合风险的说法,正确的是()。A.当投资充分组合时,可以分散掉所有的风险
B.投资组合的风险包括公司特有风险和市场风险
C.公司特有风险是可分散风险
D.市场风险是不可分散风险
A、DNA不可能被改写
B、喜砷生命同样需要磷
C、磷是生命不可或缺的
D、生命依赖于特定环境
A、They lived out a natural life
B、They died of exhaustion after the long plane ride
C、They weren’t accustomed to the change in weather
D、They died due to lack of care by family members
A、growing
B、sensitive
C、Disapproving
D、important
A、nighttime stealing increases along with increasing temperature
B、nobody is free from the influence of weather factors
C、crime rates are related to temperature, moisture, etc
D、people are thinking the possible ways to handle individual reactions to climatologicalchanges
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