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【判断题】
私人交通出行是指消费者自行完成的空间位移。A.
正确
B.
错误
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举一反三
【简答题】用按列选主元的高斯一若当消去法求矩阵A的逆矩阵，其中 中
【单选题】Paul rents out a house which is fully furnished. The house does not qualify as a furnished holiday letting. Paul paid the following expenses in relation to the letting: £ New chairs for garden (not pr...
A.
£1,830
B.
£1,480
C.
£795
D.
£1 ,230
【简答题】The house is in ____. A. a beautiful surrounding B. beautiful surroundings C. a beautiful surroundings D. beautiful surrounding 32. He had to jump over the ____ wall to fetch the ball. A. six foots hi...
【单选题】The house is in ____.
A.
a beautiful surrounding
B.
beautiful surroundings
C.
a beautiful surroundings
D.
beautiful surrounding
【简答题】求矩阵 的逆,其中 。
【简答题】求矩阵A的逆矩阵,其中 .
【简答题】Today is Tuesday. We are having a ___31___ class in the classroom. Ms Chen is telling us what water is like. After that, she asks us “___32_ water like?” No one speaks for __33__ minutes. Ms Chen asks...
【简答题】Christmas is on December 25th. It’s my favorite 26 . In the morning my parents often 27 the house. My brother and I often 28 the Christmas tree with lights. Then we put a star 29 the top(顶部) of the tr...
【简答题】设矩阵 可逆，向量 是矩阵A * 的一个特征向量，λ是α对应的特征值，其中A * 是矩阵A的伴随矩阵，试求a，b和λ的值． 分析 由特征向量的定义，可得一个三元联立方程，由此可解出所求的参数．
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