【单选题】要将某个形状从“形状”窗口中放入绘图页,正确的操作是 ( )
【单选题】Both households and societies face many decisions because
B.
populations may increase or decrease over time.
C.
wages for households and therefore society fluctuate with business cycles.
D.
people, by nature tend to disagree.
【简答题】建立窗口系统的对象模型,问题陈述如下: “窗口分为对话窗、图形窗、滚动窗三种。对话窗中有若干对话项,由唯一的项名字来确定;对话项分为按钮、选择项和正文项三种,选择项中有若干选择项入口。图形窗中有若干形状元素,形状元素分为一维形状和二维形状。一维形状又分为直线、圆弧、折线;二维形状分为圆、椭圆、矩形、多边形,其中折线与多边形由若干有序顶点组成。正文窗是滚动窗的一种,而图形滚动窗既是图形窗又是滚动窗。...
【单选题】The consumption function relates the consumption expenditure decisions of households to
A.
the level of disposable income.
B.
investment decisions of firms.
C.
saving decisions of households.
D.
the nominal interest rate.
【单选题】要将某个形状从”形状“窗口中放入绘图页,正确的操作是( )。
【单选题】要将某个形状(如“职位”)从“形状”窗口中放入绘图页,正确的操作是