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【简答题】
设矩阵 矩阵X满足X(E-C -1 B) T C T =E，将上述关系式化简并求矩阵X。
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举一反三
【单选题】As luck would have it , there was rain on the day of the picnic.
A.
derogatory
B.
commendatory
【单选题】As luck would have it , no one was in the building when the explosionoccurred.
A.
derogatory
B.
commendatory
【简答题】__luck would have it, I did not catch the plane that exploded shortly after it took off.A. as B. since C. for D. that
【简答题】___ luck would have it, there was one seat left.
【简答题】As luck would have it, there was rain on the day of the picnic.
【多选题】下列有关成纤维细胞的描述正确的是
A.
扁平、多突起
B.
胞质内富于粗面内质网
C.
分泌结缔组织中各种纤维和无定形基质
D.
是疏松结缔组织中的主要细胞
E.
功能不活跃时转变为纤维细胞
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