某地区电网规划建设一座220kV变电所,电压为220/110/10kV,所用变压器采

题型:单项选择题

问题:

某地区电网规划建设一座220kV变电所,电压为220/110/10kV,所用变压器采用双绕组变压器从10kV母线引接,主接线如图所示。请回答下列问题。

该变电所110kV出线有1回用户专线,有功电能表为0.5级,电压互感器回路电缆截面选择时,其压降应满足哪项要求?根据是什么?()

A.不大于额定二次电压的0.20%

B.不大于额定二次电压的0.30%

C.不大于额定二次电压的0.50%

D.不大于额定二次电压的1.00%

考点:注册电气工程师发输变电专业注册电气工程师发输变电专业2010年(下)专业案例真题(案例题(选择题))
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患者,女性,65岁,在家做饭时突发右侧肢体无力,不能言语23小时,意识丧失3小时,有高血压病史5年,糖尿病史2年。体检:血压205/106mmHg,对疼痛和呼唤无反应,颈抵抗(-),双侧瞳孔不等大,左0.5cm,右0.3cm,对光反射迟钝。肢体坠落试验右侧较左侧下降速度快,右侧膝反射消失、左侧(++),Babinski右侧(+)、左侧(-)

初步诊断为()。

A.脑出血

B.脑栓塞

C.脑血栓形成

D.蛛网膜下腔出血

E.原发性脑室出血

题型:单项选择题

工程建设过程中,施工场界内的污染防治属于()。

A.职业健康安全问题

B.安全生产问题

C.环境保护问题

D.环境治理问题

题型:单项选择题

显示心脏四个腔隙最佳的体位是()

A.后前位

B.左侧位

C.右侧位

D.左前斜位

E.右前斜位

题型:单项选择题

Autumn means different things to different people. It all depends on your personality, said British naturalist Richard Mabey. "Personality shapes your view of the season," he said. "You may see it as a fading away, a packing up(结束), or as a time of packing in another sense – the excited gathering of resources before a long journey."

If this is true, perhaps it tells us a little about, for instance, Thomas Hood, the 19th Century English poet. About November, he wrote:

No warmth, no cheerfulness, no healthful ease

No shade, no shine, no butterflies, no bees

November!

On the other hand, another English poet John Keats, already sensing he was seriously ill, was inspired by a late September day to pen one of the most famous poems in the English language, To Autumn. He wrote to a friend afterwards that there was something comforting and healing about it.

According to Richard Mabey, Keats has the biological evidence on his side. Autumn is not a time of slowing down, but a time of new beginnings and great movements of creatures. For example, just at the moment that Keats's "gathering swallows" (in To Autumn) are departing for Africa, millions of creatures are fleeing from the frozen north like Iceland, Greenland and Russia to winter along the east and south coasts of Britain. According to scientists, before falling, the leaves transfer their chlorophyll(叶绿素) and carbohydrates into the woody parts of the tree for safe-keeping over winter. What remains are the natural antioxidants(防老剂) in the leaves: the yellow and orange carotenoids(类胡萝卜素), and another protective chemical specially produced for autumn, the bright-red anthocyanin(花青素). High color is not a signal of deterioration(退化) and decline, but of detox(排毒的) ability and good health.

A century after Keats, the American poet Loren Eiseley wrote in his journal: "Suppose we saw ourselves burning like maples in a golden autumn. [And that we could] disintegrate(瓦解) like autumn leaves…dropping their substance like chlorophyll. Would not our attitude towards death be different?"

小题1:From Thomas Hood’s poem, we may infer that _______.

A.he suffered a lot from cold November

B.he missed the shining summer days very much

C.he had a negative attitude towards autumn

D.he enjoyed butterflies and bees very much小题2:Which word can best describe Loren Eiseley’s attitude towards autumn?

A.Optimistic.

B.Fearful.

C.Doubtful.

D.Realistic.小题3:In autumn, leaves turn yellow before falling because ______.

A.they can’t bear the freezing

B.they can’t get enough water from the wood part

C.chlorophyll and carbohydrates have been lost through leaves

D.chlorophyll and carbohydrates have come back to the wood part小题4:What does the underlined sentence mean?

A.Man can never live long, just as leaves must leave the tree annually.

B.Man is different from autumn leaves, which will come again the next spring.

C.Man should treat death calmly, just like autumn leaves fall to the ground.

D.Man should have a positive attitude towards death, quite different from autumn leaves.

题型:单项选择题

当XV阀两个电磁阀同时失电后,其阀位状态应为()。

A.同时关闭

B.保持原位

C.同时打开

D.仅将原有打开的XV阀进行关闭

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