第19题: [单项选择]Passage Two Questions 29 to 31 are based on the passage you have just heard. A. It has tried to seed the clouds overhead. B. It has made Cherokee Indians do a rain dance. C. It has sent out several water finders. D. It has transported water from other states. 参考答案:A 答案解析:[听力原文] What has Georgia tried to do to fight drought
第31题: [单项选择]下列关于拓扑优化设计的说法中错误的是() A. 拓扑优化根据设计要求能够给出何处可以去掉材料以减轻重量的建议 B. 拓扑优化需要定义设计变量、状态变量和目标函数 C. 拓扑优化设计是满足所有约束条件,并经过多次迭代,得到最优目标函数值的设计 D. 拓扑优化是最先进的设计方式,可以完全按照拓扑优化后的结构进行设计和加工 参考答案:D