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【简答题】
已知a∈R，函数f（x）=x|x-a|． （Ⅰ）当a=2时，求使f（x）≥x成立的x的集合； （Ⅱ）求函数y=f（x）在区间[1，2]上的最小值．
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皮皮学刷刷变学霸
举一反三
【判断题】完工产品与在产品从数量上看,存在如下关系:在月初在产品数量和本月投入数量一定的情况下,本月完工产品数量越大,则月末在产品数量越小;反之亦然。( )
A.
正确
B.
错误
【单选题】New Frontier and Great Society were programs initiated by _______.
A.
President Kennedy
B.
President Johnson
C.
Presidents Kennedy and Johnson respectively
D.
Presidents Johnson and Kennedy respectively
【简答题】我国交流电的频率为 赫兹。
【单选题】The Frontier and the Family The impact (影响) of the frontier has been traditionally assumed by historians, who have studied its effects on mountain men and cowboys, political and social institutions. Y...
A.
received little attention
B.
was insignificant, if compared with the impact of the frontier on cowboys
C.
was not so important as the church or the state
D.
was overlooked completely
【简答题】A(n) ______________ is the formal framework by which jobtasks are divided, grouped, and coordinated.A. organizationalstructureB. mission statemen tC. environmental sca nD. internal resource ysi s
【简答题】色彩的表情在更多情况下是通过 来表达的。
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