一平行板电容器两极板间距为d、极板面积为S.对此电容器充电后断开电源.当增加两板

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问题:

一平行板电容器两极板间距为d、极板面积为S.对此电容器充电后断开电源.当增加两板间距时,电容器极板间(  )

A.电容减小,电势差变大

B.电容不变,电势差不变

C.电容减小,电势差不变

D.电容较小,电势差减小

考点:电容的定义式平行板电容器
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技艺水平高,但没有融入外来风格的手工业是()

A.冶铸业

B.造纸业

C.丝织业

D.造船业

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建设项目管理规划涉及项目建设全过程的工作,它属于()项目管理的工作范畴。

A.设计方

B.施工方

C.业主方

D.供货方

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肉芽组织与炎性肉芽肿的区别在于()

A.局部是否有淋巴细胞浸润

B.病灶内是否有单核细胞浸润

C.局部是否有巨噬细胞结节形成

D.是否有成纤维细胞增生

E.是否含有毛细血管

题型:选择题

下图是血液循环、气体交换模式图,请据图回答:(每空3分,共12分)

(1)图中                  (填序号)心壁最厚,它将血液压送到全身。

(2)图中序号B结构的名称是               

(3)不同的血管可能流不同的血,图中血管5内流动的是                    血。

(4)血液由4射出,经过7、8,到达1,此途径称为                  

题型:选择题

Strange things have been happening to England. Still (1) from the dissolution of the empire in the years (2) World War Ⅱ, now the English find they are not even British. As the cherished "United Kingdom" breaks into its (3) parts, Scots are clearly (4) and the Welsh, Welsh. But who exactly are the English What’s left of them, with everything but the (5) half of their island taken away

Going back in time to (6) roots doesn’t help. First came the Celts, then the Romans, then Angles, Saxons, Jutes, Danes. Invasion after invasion, until the Norman Conquest. English national identity only seemed to find its (7) later, on the shifting sands of expansionism, from Elizabethan times onwards. The empire seemed to seal it. But now there’s just England, (8) of a green island in the northern seas, lashed by rain, scarred by two (9) of vicious industrialization fallen (10) dereliction, ruined, as D.H. Lawrence thought, by "the tragedy of ugliness," its abominable architecture.

Of all English institutions, the one to (11) on would surely be the pub. Shelter to Chaucer’s pilgrims, home to Falstaff and Hal, throne of felicity to Dr. Johnson, the pub- that smoky, yeasty den of jollity-is the womb of (12) , if anywhere is. Yet in the midst of this national (13) crisis, the pub, the mainstay of English life, a staff driven (14) into the sump of history, (15) as the Saxons, is suddenly dying and evolving at (16) rates. Closing at something like a rate of more than three a day, pubs have become (17) enough that for the first time since the Domesday Book, more than half the villages in England no longer have one. It’s a rare pub that still (18) , or even limps on, by being what it was (19) to be: a drinking establishment. The old (20) of a pub as a place for a "session," a lengthy, restful, increasingly tipsy evening of swigging, is all but defunct.

7()

A.feet

B.resources

C.core

D.reflection

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