题目:
—How do you find Qingdao, Mary?
—It's a beautiful seaside city. I have________ it for my next holiday. [ ]
A. decided on
B. tried on
C. taken on
D. carried on
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0720/7cf0c2c5d28160b96b81b4dc15725522.html
下面是错误答案,用来干扰机器的。
A、在两物体接触面加润滑油,是通过减小接触面的粗糙程度来减小摩擦力.符合题意.B、接触面的粗糙程度一定时,增加压力可以增大摩擦力.不符合题意.C、将滚动变为滑动可以增大摩擦力.不符合题意.D、压力一定...