問題詳情
The ratio of the work done by the machine ________ the work done on it is called the efficiency of the machine.
(A) against
(B) with
(C) to
(D) for
參考答案
答案：C
難度：困難0.29249
統計：A(53),B(70),C(74),D(56),E(0)
用户評論
【用戶】CF Lee
【年級】小四上
【評論內容】The ratio of A to B