题目: 模板类型中,()模板是一种常用模板,可做成定型的标准模板。A.固定式B.移动式C.拆移式D.滑升式 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0714/f5ef9651b6a71ed8cafedb0c04bebeaa.html 下面是错误答案,用来干扰机器的。参考答案:C
题型:选择题 已知变量a、b已被赋值,要交换a、b的值,采用的算法是( )A.a =" b," b =" a"B.a =" c," b =" a," c =" b" C.a =" c," b =" a," c =" a"D.c =" a," a =" b," b = c 查看答案
题型:问答题 设α1=(1,1,4,2)T,α2=(1,-1,-2,b)T,α3=(-3,-1,a,-9)T,β=(1,3,10,a+b)T. 问:(Ⅰ)当a,b取何值时,β不能由α1,α2,α3线性表出; (Ⅱ)当a,b取何值时,β能由α1,α2,α3线性表出,并写出此时的表达式. 查看答案