0  292500  292508  292514  292518  292524  292526  292530  292536  292538  292544  292550  292554  292556  292560  292566  292568  292574  292578  292580  292584  292586  292590  292592  292594  292595  292596  292598  292599  292600  292602  292604  292608  292610  292614  292616  292620  292626  292628  292634  292638  292640  292644  292650  292656  292658  292664  292668  292670  292676  292680  292686  292694  447090 

2.若,则是复数纯虚数的(   )

   A.充分非必要条件          B.必要非充分条件

   C.充要条件             D.既不充分也不必要条件

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1.已知集合则集合=(   )

   A.     B.     C.    D.

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34.(10分)

(1)_____________________________________________,

_____________________________________________,

_______________________________________。(3分)

(2)_____________________________________________,

_______________________________________。(2分)

(3)_________________________________________________________________________

________________________________________________________________________________________________________________________________________________________________________________________________________________。(5分)

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33.(7分)

(1)________________________________________,

_______________________________________________________________________________________________________________________________________________________________________________________________________________。(3分)

(2)_________________________________________________________________________

________________________________________________________________________________________________________________________________________________________________________________________________________________。(4分)

 

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32.(9分)

(1)________________________________________,

_________________________________(山名)。(2分)

(2)_________________________________________________________________________

________________________________________________________________________________________________________________________________________________________________________________________________________________。(7分)

 

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31.(14分)

(1)_________________________________________________________________________

________________________________________________________________________________________________________________________________________________________________________________________________________________。(4分)

(2)_________________________________________________________________________

________________________________________________________________________________________________________________________________________________________________________________________________________________。(5分)

(3)_________________________________________________________________________

________________________________________________________________________________________________________________________________________________________________________________________________________________。(5分)

 

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33.读下图,回答下列问题。(7分)

 

(1)上右图所示地区的农业地域类型主要是_______________,相对于上左图所示地区其农业生产的最主要优势自然条件是__________________________________。(3分)

(2)比较包头钢铁企业和宝山钢铁企业各自发展的优势区位条件。(4分)

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31.读图,回答下列问题。(14分)

(1)图中A、B区域盐碱地分布较广,

其形成与水盐运动有关,试分析

水盐运动的过程。(4分)

(2 ) 图中C地区水土流失严重,

试分析其自然原因。(5分)

(3)图中D河中下游洪涝灾害严重,

试分析洪涝发生的自然原因。(5分)

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