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【单选题】
不能直接进球得分。
A.
掷界外球
B.
角球
C.
点球
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A.
创新
B.
效益增长
C.
经济利润
D.
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A.
正确
B.
错误
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A.
Doc
B.
W p s
C.
t x t
D.
ppt
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A.
定期交易
B.
连续交易
C.
指令驱动
D.
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A.
£1,830
B.
£1,480
C.
£795
D.
£1 ,230
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【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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