A policeman___the thief and catch him (knocked at/knocked out)
题目
A policeman___the thief and catch him (knocked at/knocked out)
应该选什么?(今晚答出者加悬赏)
The manager knocked 10%___the charge.A:off B:over C:out D:of 选什么?
答案
/knocked out
A off ,减去10%
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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