1.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 2.China started its nuclear power industry only in recent years, and should ___ no time in catching up .A delay B average C lag D lessen 幫忙選完給翻譯一下 謝謝。
熱心網友
1、第一題選C,意思是。。。對。。。的比率這句話的意思是“機器所完成的工作量與需要機器做的工作量的比率就是機器的工作效率”2、答案是A,意思是“花費,耽誤”。這句話的意思是“中國是最近幾年才開始核能工業的,但是,要趕上其他國家將不會花費太多時間”