关于受相同载荷的圆形平盖与等径的凸形封头应力状况： 下列说法正确的是：( A.受相同载荷的圆形平盖与等径的凸形封头应力状况是不 同的，圆形平盖中以薄膜应力为主，凸形封头以弯曲应力 为主； B. 受相同载荷的圆形平盖与等径的凸形封头应力状況是不 同的，圆形平盖中以弯曲应力为主，凸形封头以薄膜应力 为主： C. 受相同载荷的圆形平盖与等径的凸形封头应力状况是相 同的，圆形平盖和凸形封头都以薄膜应力为主； D.受相同载荷的圆形平盖与等径的凸形封头应力状況是相 同的，圆形平盖和凸形封头都以弯曲应力为主；

问答题Which of the following teaching objectives does not refer to “language understanding”? （ ） A Understand that the 'ea' pattern has several sounds in English. B Tell the meaning of the following words: big, small, long, short, strong. C Understand people from different countries have different ways of greeting and show respect for each other’s custom. D Know “be going to” could be used to describe actions, behaviors and events which are to happen in the future.

问答题完整的本科生毕业论文（设计）应该包括题目、（）、中英文关键词、（）、正文、结论、（）、附录（可选）、致谢等，并提供（）报告