所谓优化,就是按照规定的(),在一定的约束条件下,寻求最佳方案。
参考答案:目的
As an investor continues to move downward on the efficient frontier, which of the following best describes the change in the: slope of the efficient frontier incremental return per unit of incremental risk()
A. Increases Increases
B. Increases Decreases
C. Decreases Increasea
检漏继电器试验不跳闸时,应该()。
A、不能影响生产,检修班处理。
B、立即切断电源并向相关人员汇报。