2. 职称英语
  3. The ratio of the work done by the machine______the work done on it is called the

The ratio of the work done by the machine______the work done on it is called the

游客2024-06-23  34
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 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:http://tihaiku.com/zcyy/3646523.html
相关试题推荐
随机试题
最新回复(0)