某生产经营单位按照《安全生产法》的有关规定,只配备了兼职安全生产管理人陨,则该单位从业人数上限是()人。
A. 100
B. 300
C. 500
D. 1000
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下列关于变异系数的说法,正确的是()。
A. ①变异系数用来衡量单位预期收益率所承担的风险
B. ②变异系数越大,表示投资项目风险越大,越不应该进行投资
C. ③项目A的预期收益率为7.5%,标准差10%,则其变异系数为0.75
D. ④项目B的预期收益率为4%,标准差3%,则其变异系数为0.75
E. ①②③
F. ①③④
G. ①②④
H. ②③④
supercomputer superman supermarket superpower
superabundant super-efficient super-speed superstar
No one noticed that the little boy had c______ into the room and was sitting there, listening.
3.British car workers did not earn nearly enough m______ to buy the products they were turning out.