设相互独立的随机变量X与Y的方差分别为4和2，则D（3X-2y）=（）。
A．44
B．28
C．16
D．8
参考答案：A
学生的学习内容有( )。
A．知识、技能的掌握
B．学习策略的掌握
C．潜意识的挖掘
D．问题解决能力和创造性的发展
Which of the following steps is least likely to be an administrative step in the capital budgeting process（）
A. Arranging financing for capital projects.
B. Conducting a post-audit to identify errors in the forecasting process.
C. Prioritizing projects according to project profitability and company resources.
