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【判断题】
若一齐次线性方程组有非零解,系数矩阵的秩为r,则基础解系含r个解向量.A.
正确
B.
错误
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举一反三
【单选题】.She always have ________ his dog on Sundays.
A.
fun.
B.
a fun with
C.
fun with
D.
fun from
【简答题】定喘汤中，主'收'者，为
【简答题】think someone is guilty or not honest ___________
【简答题】A．The feeling of pleasure. B．The feeling of frustration. C．The feeling of understanding. D．The feeling of dispute.
【简答题】定喘汤主治______。
【单选题】以下不属于战略联盟与并购之间区别的是( )
A.
战略联盟是相互合作的关系
B.
战略联盟能够保持各自的自主性
C.
并购能够保持各自的自主性
D.
战略联盟不会放弃各自的根本利益
【单选题】Water Park is a good place _______. [ ]
A.
to have fun
B.
have fun
C.
having fun
D.
to have a fun
【单选题】Bridge Street is a good place _______. [ ]
A.
have fun
B.
to have fun
C.
having fun
D.
to fun
【单选题】Symptoms of emotional stress include_____.
A.
feeling joyous
B.
feeling hungry
C.
feeling thirsty
D.
feeling tired
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