皮皮学，免费搜题
登录
搜题
【简答题】
设α1=(1，1，1)，α2=(1，2，3)，α3=(1，3，t)， (1)问t为何值时，向量组α1，α2，α3线性相关． (2)问t为何值时，向量组α1，α2，α3线性无关． (3)当线性相关时，将α3表示为α1和α2的线性组合。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】My friend Linda is very easy ______ in our class. [ ]
A.
getting along
B.
to get along with
C.
getting on
D.
to get well with
【单选题】Linda is very outgoing and she prefers outside. She hates staying inside. [ ]
A.
to is
B.
to being
C.
to be
D.
being
【简答题】根据句意及首字母提示完成单词。 1. Linda is very busy when people go out for dinners. She works in a r_____. She is a waitress. 2. My father's work is very interesting but kind of erous. Thieves are afraid of (害怕...
【简答题】Linda is a 15-year –old American girl. She is outgoing and likes friends. Her parents are very 1 .They have no tome to stay with Linda, 2 she spends a lot of time on the Internet(网络) every day....
【单选题】Linda is a very ________ secretary: she never forgets anything or makes a mistake.
A.
sufficient
B.
effective
C.
efficient
D.
adequate
【单选题】Linda is very funny. She loves ______jokes. [ ]
A.
to say
B.
to tell
C.
to play
D.
saying
【单选题】听力原文：W: Linda is very quiet. But her brother talks too much. M: Yes, you are right and he isn' t friendly either. Q: What's their opinion of Linda' s brother? (13)
A.
He doesn't like to talk.
B.
He is a very kind man.
C.
He is friendly.
D.
He is not a pleasant person.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
