电除尘二次电流大,二次电压升不高,甚至接近于零的原因有()。A、承压绝缘子内壁冷凝结

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问题:

电除尘二次电流大,二次电压升不高,甚至接近于零的原因有()。

A、承压绝缘子内壁冷凝结露,造成高压对地短路;

B、二次高压电缆或电缆终端接头击穿短路;

C、阴极振打装置的刚玉瓷轴破损,对地短路;

D、灰斗内积灰过多粉尘堆积至电晕极框架。

考点:电厂电气专业继电保护技能鉴定考试电厂电气继电保护初级电厂电气继电保护初级题库
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BEIJING---Chinese Premier Wen Jiabao has visited the“left-behind” children whose parents are working in cities before Children’s Day.

During a visit to northwest China’s Shanxi Province, Wen visited the home of Yang Saike, a primary school boy in a village of Xingping City, Yang, whose parents were working in Fujian, thousands of kilometers away, was cared for by his grandparents. His parents fail to go home even once a year.

The premier held Yang in his arms and looked through his exercise books and praised him for his hard work. (83) Wen talked with many children and asked them many questions about their schooling and life.“ You are so pretty,” Wen said to Liu Mengqi, a seven-year-old girl living with her grandmother. Liu’s parents were also working in the city.

“Have you been to school yet?” Wen asked two other girls.

“ We are going to the pre-school class,” said one.

“ Mon and dad at home?” Wen asked. The children shook their heads.

“ Children cannot see their parents very often, which is a new problem in the countryside. We should give them more care and love,” said the premier.

(84) “ With fast economic(经济)development, more people in the country chose to work in cities and left their children with grandparents or relatives back home”,said Wen. The premier asked local governments to do something to protect and care for such children at home and free their parents in cities from worries about their children.

A. 根据短文内容简要回答问题。

小题1:What questions did Wen Jiaobao ask the children in the countryside?

_________________________________________________________________

小题2:What did the premier ask local governments do?

________________________________________________________________

B. 将短文中划线的句子译成汉语。

小题3:_______________________________________________________________                    

小题4:_______________________________________________________________                                                                           

C. 请给短文拟一个适当的标题。

小题5:____________________________________________________________                                

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药材略呈扁斜方形,外皮黄棕色或黄绿色,两侧各具一条色较浅的斜形凹纹。此药材是

A.菟丝子

B.决明子

C.白芥子

D.牵牛子

E.沙苑子

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视网膜手术后继发性青光眼治疗需要()

A.激素

B.降眼压

C.缩瞳

D.扩瞳

E.手术

题型:多项选择题

需矫正的三种问题行为,是()。

题型:多项选择题

中年女性,甲亢患者。抗甲状腺药物治疗8个月,外周血白细胞降至3×109/L,中性粒细胞1.35×109/L。应采取的治疗是()

A.减少抗甲状腺药物剂量

B.减少抗甲状腺药物剂量,加用促进白细胞增生药

C.停用抗甲状腺药

D.停用抗甲状腺药,严密观察

E.停用抗甲状腺药,严密观察,加用促进白细胞增生药

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