电气设备与操作过电压的绝缘配合时,在电气设备外绝缘的耐压取值方法中,以下方法错误的是

题型:单项选择题

问题:

电气设备与操作过电压的绝缘配合时,在电气设备外绝缘的耐压取值方法中,以下方法错误的是( )。

A.电气设备外绝缘相对地干态额定操作冲击耐压与相应设备的内绝缘额定操作冲击耐压相同;
B.变压器外绝缘相间干态额定操作冲击耐压与其内绝缘相间额定操作冲击耐压相同;
C.断路器、隔离开关同极断口间外绝缘额定操作冲击耐压应该大于断路器断口间内绝缘的相应值,一般耐压值可大于5%;
D.断路器、隔离开关同极断口间外绝缘额定操作冲击耐压与断路器断口间内绝缘的相应值相同。

考点:注册电气工程师发输变电专业过电压保护和绝缘配合
题型:单项选择题

阅读下面短文,用括号内所给动词的适当形式填空 (必要时可加情态动词或助动词)。

       Henry found a job in a bookstore after he finished middle school. He wouldn't do anything but wanted to get

rich.

       It was a cold morning. It 1._______ (snow) and there was thin ice on the streets. Few people went to buy

the books and the young man had nothing 2.______ (do). He hated to read, so he watched the traffic. Suddenly

he 3.______ (see) a bag fall off a truck and it landed by the other side of the street.

       "It 4.             (be) full of expensive things." Henry said to himself. "I have to get it right now, or others

5.______ (take) it away." 

       He went out of the shop and ran across the street. A driver saw him and began to whistle (鸣笛), but he

didn't hear it and went on 6.______ (run). The man drove to the side, hit a big tree and 7.______ (hurt) in the

accident. Two weeks later Henry was taken to court. A judge asked if he heard the whistle when he was running

across the street. He said that something was wrong with his ears and he could hear nothing.

       "But you 8.______ (hear) me this time," said the judge.

       "Oh, I'm sorry. Now I can hear with one ear."

       "9.______ (cover) the ear with your hand and listen to me with your deaf one. Well, can you hear me?"

       "No, I can't, sir." 

       "You 10.______ (tell) lies. There is nothing wrong with either of your ears." The judge said.

题型:单项选择题

免疫抑制剂治疗ITP,正确的是().

A.初发患者

B.与糖皮质激素交替使用可提高疗效

C.疑有脑出血者

D.可作为ITP的首选治疗

E.与糖皮质激素合用可提高疗效,减少糖皮质激素用量

题型:单项选择题

治肝火犯胃,湿热中阻之呕吐泛酸的药对宜选()

A.夏枯草、生姜

B.芦根、桑叶

C.黄连、吴茱萸

D.黄连、龙胆草

E.玄参、栀子

题型:单项选择题

无论什么刀具,它们的切削部分总是近似的以外圆车刀的切削部分为基本形态。

题型:单项选择题

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