题目内容：
已知平面向量a=(-2，1)与b=(λ，2)垂直，则λ=
A．-4 B．-1
C．1
D．4
参考答案：
答案解析：
单选题：已知平面向量a=(-2，1)与b=(λ，2)垂直，则λ=
- 题目分类：文科数学
- 题目类型：单选题
- 查看权限：VIP
B．-1
C．1
D．4
B．-1
C．1
D．4
回答题Directions:Read the following text and fill each of the n
回答题Directions:Read the following text and fill each of the numbered spaces wit
Smallerenterpriseshavedifficultyusingforeigntalentbecauseof
SmallerenterpriseshavedifficultyusingforeigntalentbecauseofA．thecostlyrecruiting
Itcanbeinferredfromthelastparagraphthat
ItcanbeinferredfromthelastparagraphthatA．manyblacksarepreparedforleadership. B．D
WhydidtheauthorsaytheHouse’scomplaintwasridiculous?
WhydidtheauthorsaytheHouse’scomplaintwasridiculous?A．Thereasonsitoffersarelargel
Educationforeducalion’ssakewasprobablyopposedby
Educationforeducalion’ssakewasprobablyopposedbyA．scholarsintheRenaissanceperiod.