2. 专升本
  3. The ratio of the work done by the machine _______the work done on it is called the efficiency of the machine.

The ratio of the work done by the machine _______the work done on it is called the efficiency of the machine.

admin2018-03-30  37
问题 The ratio of the work done by the machine _______the work done on it is called the efficiency of the machine.
选项 A、against
B、with
C、to
D、for   
答案C
解析 句意：机器所做的工作与在机器上所用的功之比，就称为机器的效率。本题考查固定搭配。题中ratio与介词to是固定搭配，the ratio of A to B的意思为“A与B之比(率)”，故选C。
转载请注明原文地址:https://kaotiyun.com/show/tjWC777K
本试题收录于： 英语题库普高专升本分类
0

英语

普高专升本

相关试题推荐
随机试题
最新回复(0)