The main difference between contemporary dams and Dujiangyan system is that the former block the flow of water while Dujiangyan allows water to flow naturally。


The main difference between contemporary dams and Dujiangyan system is that the former block the flow of water while Dujiangyan allows water to flow naturally。

A.正确

B.错误

正确答案:A


Tag: 时间:2022-05-24 19:43:27