The average country in our world depends on non-renewable energy for their power resources. Transitioning to renewable energy can lessen the dependence on fuel imports or international aid to meet power demands. An example of this is the Aswan High Dam in Egypt. With just 12 turbines, the da...
这是写作文首先要做好的事,否则,就会直接导致“文不对题”,“下笔千言,离题万里”。怎样才能审好题呢?根据通常的作文题目的形式来看,一般可分为命题作文和材料作文两大类。对命题作文的审题,就是要审查给定的文章题目确定的具体要求,审清文题意图,明晰题外要求,确定“题眼”。通过审题,明...
Earthfill dam, dam built up by compacting successive layers of earth, using the most impervious materials to form a core and placing more permeable substances on the upstream and downstream sides. A facing of crushed stone prevents erosion by wind or rai