bfghdggf

与楼主有一样的问题呢,我是选c的,认为by the late seventies, the amount of fixed assets required to produce one vehicle was roughly equivalent in Japan and in the United States.是说两者需要的fixed assets是一样,所以比较基础一致, productivity level是可以比较的!

我知道自己有点蠢,那位好NN,帮帮我们吧!