do you know any equipment for this testing / to this testing
题目
do you know any equipment for this testing / to this testing
Which is correct?Then translate to Mandarin.
1)Do you know any equipment for this testing.
2)Do you know any equipment to this testing.
答案
1)Do you know any equipment for this testing.(Correct)
你知不知道用甚麼器具以进行这项测试
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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