【简答题】单词拼写(共20小题;每小题0.5分,满分10分) 小题1:The farmers in this area had a good harvest last year thanks to the s___________ farming. 小题2:From the findings, we can draw a c____________ that English is a useful tool...
【简答题】已知 A 是矩阵,求 A 的对角矩阵函数是 _______ , 求 A 的下三角矩阵函数是 ______ 。
【简答题】My first football 小题1: ( compete) was in Nagoya, Japan several years ago. Last year our team went to Seattle, Washington in the USA. We 小题2: (win) second place. 小题3: (personal), I think the team that ...
【单选题】This year we will produce______they did last year.
B.
twice as many than cars
【简答题】根据句意及首字母提示完成单词。 1. Last year, we v______ many interesting cities. 2. My brother likes climbing m______. 3. I think the math t______ is very difficult. 4. — Do you often p______ English with your Engli...
【单选题】We have spent ______ sum of money ______ we did last year on advertising.
【简答题】设实数域上的3级实对矩阵A为已知相似于对角矩阵,试求a并求可逆矩阵P,使得P-1AP是对角阵.已知 相似于对角矩阵,试求a并求可逆矩阵P,使得P-1AP是对角阵.
【单选题】201806 T64 We have a special surprise for you-a seven-day online promotion of all the electronic products we manufactured last year.
A.
我们有个特大的喜讯一我们将在七天之内上网展出去年生产的所有电器产品。
B.
我们给你一个特别的惊喜——在线促销我们去年生产的所有电子产品,为期七天。
C.
我们为你准备了礼物——你可凭去年购买我们公司产品的发票在七天内上网申领。
【单选题】已知 A 是矩阵,求 A 的对角矩阵 的 函数是 ( ) ,求 A 的下三角矩阵 的 函数是 ( ) 。
【单选题】已知 A 是矩阵,求 A 的对角矩阵函数是 _______ , 求 A 的下三角矩阵函数是 ______ 。