【单选题】Let us _____________. [ ]
【简答题】According to the survey (conduct)______recently, 52% of American business people booked their business travel online last year.
【简答题】When did Volvo sell its car manufacturing division to Ford?
【简答题】Let us construct, with the origin(原点) as center, a semicircle(半圆) of radius R.
【单选题】IPv6使用_______bit的地址( )
【单选题】IPv6唯一本地地址中40bit的全球唯一前缀作用是
【简答题】When did Volvo sell its car manufaturing part to Ford?