特高压交直流混合电网是指在超高压交流电网的基础上采用了()交流和±800kV及以上直

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问题:

特高压交直流混合电网是指在超高压交流电网的基础上采用了()交流和±800kV及以上直流特高压并联同步或异步输电的输电网。

A.800kV

B.1000kV

C.500kV

D.750kV

考点:全球能源互联网知识竞赛全球能源互联网知识竞赛题库
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下表中所列的是一年中甲、乙、丙、丁四地的昼长差(即一年中昼长最大值-昼长最小值)。根据表中的数据回答下列各题。

 
昼长差24小时5小时30分13小时56分0
小题1:四地中属于寒带的是(   )

A.甲

B.乙

C.丙

D.丁小题2:四地所处的纬度从高到低的排列顺序是 (   )

A.甲乙丙丁

B.甲丙乙丁

C.丁丙甲乙

D.丁丙乙甲

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患者,女,17岁,高中生。以往身体健康,性格内向,喜欢自己一个人沉思,不善交友,不善言谈,腼腆胆怯,不苟言笑,不曾恋爱。其母亲曾因“精神分裂症”住院,父亲有“精神衰弱”经常去医院就诊。她学习很好,是班里的优秀学生。3天前,无诱因就出现失眠,上课时注意力不集中,一向内向腼腆的她却主动要家长给介绍男朋友,慢慢地发展到有时头插鲜花,甚至赤身裸体,将家中玻璃窗打碎,喝痰盂中的小便,自打耳光,哭笑无常,讲话前言不对后语,无故咒骂母亲,言语粗鲁。

首先考虑的诊断为()。

A.偏执症精神分裂症

B.青春型精神分裂症

C.单纯型精神分裂症

D.紧张型精神分裂症

E.未定型精神分裂症

题型:单项选择题

Yesterday morning I was going to school on our foot with Li Ming.    1.   

We were talking and laughing happily on the way while a motor-bike   2.   

knocked me off my bike. As a result, I seriously hurt in the left leg     3.  

and could hardly stand up. Seen this, Li Ming jumped off his bike, put it   4.   

aside, stopped a taxi and took me to the hospital at once. In the hospital, a 5.   

doctor gave me quick examination. I was told that I had to stay there for   6.   

some time. So Li Ming went out and ring up my parents. He told them what 7.    

had happened to me in the street. He didn’t leave the hospital until his parents 8

arrived. I stayed in the hospital a whole day until later in the afternoon.    9.   

Luckily, I can walk as better as before now. I must thank Li Ming for his help.10. 

题型:单项选择题

下列哪种情况予高压氧治疗效果最好()

A.有机磷中毒昏迷者

B.氰化物中毒

C.有机磷中毒肺水肿者

D.一氧化碳中毒

E.乙醇中毒

题型:单项选择题

心电图表现,P波增宽有切迹呈双峰样,峰间距离大于0.04秒,P波时限>0.12秒,下列哪种病出现上述情况().

A.风心病二尖瓣狭窄

B.冠心病

C.高血压性心脏病

D.病毒性心肌炎

E.慢性肺源性心脏病

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