变压器二次绕组短路,一次绕组施加电压使其电流达到额定值时,此时所施加的电压称为阻抗电

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问题:

变压器二次绕组短路,一次绕组施加电压使其电流达到额定值时,此时所施加的电压称为阻抗电压。

考点:电工进网证考试电工进网证(高压类)电工进网证(高压类)题库
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在干燥空气流通的工作场所,电动机可以不使用接地线。

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中国在处理国家间关系的基本原则是( )。

A.维护和平、促进发展

B.永远不称霸

C.和平共处五项原则

D.建立互信、发展合作

题型:判断题

In the summer vacation of 1997, I was fixed with a job. I worked as a(n) ___36___ at Mr. Breen’s fruit shop. The fruit shop did ___37___ business. Most of the trade came from the housewives who lived in the neighbourhood, ___38___ he also had regular customers who arrived outside the shop in cars. Mr Breen ___39___ them all by name and they sometimes even had their order already made up, always ___40___ me to carry it out to their car. They were clearly long-standing customers, and I ___41___ they must have stayed faithful to him ___42___ he had promised to sell good quality ___43___. He had a way with them—I had to ___44___ that. He called every woman “madam” for a start, ___45___ those who clearly were not, but when he ___46___ it, it did not sound like flattery (奉承). It just sounded ___47___ in an old-fashioned way. He was a great chatter ___48___. If he did not know them, he would greet them with a few ___49___ about the weather, ___50___ he did, he would ask about their families or make ___51___, always cutting his cloth ___52___ his customers. Whatever their bills came to, be ___53___ gave them back the few odd pence (零钱), and I am sure they thought he was very generous (慷慨). But I thought he was the opposite. He never ___54___ anything away. He was always looking for ___55___ for nothing.

36. A. operator      B. assistant     C. waiter D. secretary

37. A. good    B. poor   C. big     D. usual

38. A. so B. when  C. therefore    D. but

39. A. sold     B. knew  C. gave   D. sent

40. A. making B. letting C. getting       D. keeping

41. A. wish     B. insist   C. declare       D. suppose

42. A. when    B. if C. because      D. though

43. A. food     B. fruit    C. vegetables  D. drink

44. A. admit   B. expect C. announce    D. promise

45. A. yet       B. only    C. just     D. even

46. A. told      B. said    C. spoke  D. talked

47. A. serious B. strange       C. polite  D. familiar

48. A. as well B. as usual      C. either  D. also

49. A. sayings B. questions    C. words D. speeches

50. A. and then      B. and so C. even if       D. but if

51. A. preparations B. jokes   C. repairs       D. friends

52. A. according to B. due to C. instead of   D. up to

53. A. never   B. ever    C. seldom       D. always

54. A. took     B. moved       C. threw  D. turned.

55. A. something    B. anything     C. somebody   D. anybody

题型:判断题

患者,女性,58岁,右眼视物不清,眼前固定黑影3天。3天前患者无明显诱因晨起后出现右眼视物模糊,眼前黑影,相对固定,1天后未能缓解,黑影逐渐增大,变暗,发展为上半侧黑影。无畏光、流泪,无眼红、眼痛。患者否认心脏病、糖尿病、高血压等全身病史。平时血压偏低。眼科检查:VOD0.3,VOS1.0,双眼前段正常。

根据上述描述,最有可能的疾病是().

A.颅内肿瘤

B.视盘血管炎

C.急性视神经炎

D.视网膜静脉阻塞

E.前段缺血性视神经病变

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男,27岁,7天来全身皮肤出血点伴牙龈出血来诊。化验Plt35×109/L,临床诊断为慢性特发性血小板减少性紫癜(ITP)。

该患者的首选治疗是()

A.糖皮质激素

B.脾切除

C.血小板输注

D.长春新碱

E.达那唑

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