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【单选题】
把鸡蛋弄破从而竖立起来,这体现了哪种思维?A.
逆向思维
B.
系统思维
C.
发展思维
D.
直觉思维
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【单选题】一物体以初速度 v 0 做匀减速直线运动,第 1 s 内通过的位移 x 1 = 3 m ,第 2 s 内通过的位移 x 2 = 2 m ,又经过位移 x 3 物体的速度减小为 0 ,则下列说法错误的是
A.
初速度 v 0 的大小为 2.5 m/s
B.
加速度 a 的大小为 1 m/s 2
C.
位移 x 3 的大小为 1.125 m
D.
位移 x 3 内的平均速度大小为 0.75 m/s
【单选题】根据下列选项，回答 111～112 题：
A.
伴干咳
B.
大量脓痰 c．铁锈色痰 D．伴咯大量鲜血 E．粉红色泡沫痰 第 111 题 患急性左心衰竭时的咳痰特征是 （ ）。
【单选题】Lives of the Poets consists of the biographies of 52 poets and affords some of the best-known pictures of the early English poets. Its author is______.
A.
Samuel Richardson
B.
Jonathan Swift
C.
Joseph Addison
D.
Samuel Johnson
【单选题】Do you get _______ to tell me? [ ]
A.
something exciting else
B.
something else exciting
C.
anything exciting else
D.
anything else exciting
【单选题】保险需求的交叉弹性的公式表示( )。
A.
Ex=△D/D△Pg/Pg
B.
Ex=△Pg/Pg△D/D
C.
Ex=△D/P△Pg/D
D.
Ex=△Pg/D△D/Pg
【单选题】The “confederation school” poets of nineteenth-century Canada were primarily nature poets, ______ a wealth of eulogies to Canadian rural life.
A.
and producing
B.
who they produced
C.
producing
D.
whose production of
【单选题】Metaphysical poets and Cavalier poets share a similar awareness of______in their poetry.
A.
mortality
B.
sensuality
C.
destiny
D.
joy
【单选题】There are three groups of poets in the literature of the English bourgeois revolution. Among them the revolutionary poets are _______.
A.
Puritan poets
B.
Cavalier poets
C.
Metaphysical poets
D.
Both B and C
【简答题】设X服从泊松分布，已知P(X=1}=2P{X=2}，求EX，DX，EX2，P{X=3}．
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