在文中找出 下列五个英文问题对应的答案,并请将问题和答案都 翻译成汉语 。 1.What is CAD? 2.What do CADD、CAID and CAAD stand for(是...的缩写)? 3.Which areas(领域) can CAD be used in? 4.What are the advantages of CAD compared with hand drafting(手工绘图)? 5.What are the else(其它的) advantages of CAD?