题干
根据给出的句子匹配下面的图片。
Mickey Mouse would like some water. Donald Duck likes juice. Snow White would like some tea. Tutu would like some candy. Conan likes oranges. |
⑴ 
____ A. 
⑵ 
____ B. 
⑶ 
____ C. 
⑷ 
____ D. 
⑸ 
____ E. 
答案(点此获取答案解析）
B,E,C,A,D
，
是平面内两个互相垂直的单位向量，若向量
满足
，则
的最大值是( )