--- A: have an appointment with Mr. Xie at about 10 o’clock tomorrow morning but woul

继续教育 公共基础 已帮助 人

--- A: have an appointment with Mr. Xie at about 10 o’clock tomorrow morning, but would you please postpone it to sometime next week?

---B:

A、No, thanks.

B、All right.

C、It’s my pleasure.

热搜:n维列向量组a1,an-1线性无关,且与非零向量正交