【判断题】急性型猪瘟剖检常见脾脏肿大,边缘凸起,可见形状不一的出血性梗死,肾脏表面有针尖大小的出血点。
【判断题】forms a subspace of .
【简答题】地面沉降灾害与地裂缝灾害的联系、区别及成因。
【简答题】6 Find 3 vectors such that when added to the set of vectors in Problem 5.5 the resulting 8 vectors form a vector subspace of . Find a basis for the vector subspace and the dimension of the subspace.
【判断题】forms a subspace of .
【单选题】1975 年,霍金创立了闻名世界的理论体系,让 ( ) 的概念家喻户晓。