题目内容

空间固定端不仅限制了物体沿个方向的移动，也限制了物体绕个轴的转动。

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Fill in the blanks with the correct words from the text.In class,she 1 notes with it,instant-messaging or 2 friends .With many schools ___ 3_wireless Internet access anywhere on campus,colleges as a group have become the most _4_ spots in the world.For most undergraduates, -5- Internet connectivity is the -6- of college life.But in doing so, students must remember to --7- and -8-your time.With the widespread -9- of computer technology,we are going to-10- a generation of problem-solvers and intelligent thinkers.

某公司股票的β系数为1.3,目前的国库券收益率为6%,市场投资组合收益率为12%。要求:计算该股票资本成本。

回归直线在平面坐标系中的位置取决于a，b的取值。

A. 对
B. 错

直线回归就是用来描述一个变量如何依赖于另一个变量（）

A. 对
B. 错