设a=(1,1,-2),b=(x,y,z),若x2+y2+z2=16,则a•b的 发布时间:2017-05-12 13:42 │ 来源:www.tikuol.com 题型:填空题 问题: 设a=(1,1,-2),b=(x,y,z),若x2+y2+z2=16,则a•b的最大值为______.
题型:填空题 33. Is it in this hospital_______my father had worked at I was born?A.where; thatB.that; whereC.which; thatD.which; where 查看答案