【单选题】---- I don’t feel well today. I have a stomachache. ----Sorry to hear that. ______________________.
B.
I hope you feel better soon
D.
Haha, you are lucky (幸运的)
【单选题】已知f(x)=3-2|x|,g(x)=x 2 -2x,F(x)= g(x),当f(x)≥g(x)时 f(x),当f(x)<g(x)时 , 则F(x)的最值是( )
【单选题】Don’t feel ____ lucky as to escape being fined because you have a very fast sports car.
【简答题】功率表的电源端接线规则是什么?选择功率表的量限原则是什么?
【单选题】大学生创业常见的风险归为哪两大类?( )
【单选题】功率表在测量电路的有功功率时,两个线圈的接线原则是( )。
【简答题】已知f(x)=2 x ,g(x)=3 x . (1)当x为何值时,f(x)=g(x)? (2)当x为何值时,f(x)>1?f(x)=1?f(x)<1? (3)当x为何值时,g(x)>3?g(x)=3?g(x)<3?