我国儿童服用的脊灰疫苗为下列哪一种() A.灭活疫苗 B.减毒活疫苗 C.亚单位疫苗

题型:单项选择题 A1型题

问题:

我国儿童服用的脊灰疫苗为下列哪一种()

A.灭活疫苗

B.减毒活疫苗

C.亚单位疫苗

D.DNA疫苗

E.合成疫苗

考点:卫生资格考试(中初级)疾病控制主治医师主治医师(疾病控制)相关专业知识考前押卷(一)
题型:单项选择题 A1型题

多面体ABCDE中,AB=BC=AC=AE=1,CD=2,AE⊥面ABC,AE∥CD.

求证:面BED⊥面BCD.

题型:单项选择题 A1型题

阅读下面的短文,从短文后各题所给的四个选项(A、B、C、D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

A young man was getting ready to gradually from college, for many months he bad 36 a beautiful sports car in a dealer’s showroom, and 37 his father cold well 38 it, he told him that was all he wanted.   

On the morning of his gradation day his father called him into his own study and told him how 39 he was to have such a fine son. He handed his son a beautiful gift box. 40 but slightly disappointed, the young man 41 the box and fond a lovely book, 42, he raised his voice at his father and said. ” 43 all your money you give me a book?” And rushed out of the hose 44 the book in the study 

He did not contact(联系)his father for a whole year 45 one day he saw in the strict an old man who looked like his father. He  46  he bad to go back home and see his father.   

When he arrived at his father’s hose, he was told that his father had been in hospital for a week. The moment he was about to  47  the hospital. he saw on the desk the  48  new book ,just as he had left it one  49  ago. he opened it and began to 50  the pages. suddenly, a car key 51  from an envelope taped behind the book ,it bad a lag(标签)with dealer’s name, the 52 dealer who had the sports car he bad 53 on the tag was the 54 of his gradation. and the 55  PAID IN FLL

36. A. expected.    B. enjoyed.       C. admired.       D. owned 

37. A. finding     B. proving         C. deciding        D. knowing

38. A. afford.     B. offer           C. keep           D. like

39. A. encouraged. B. comfortable     C. prod.          D. moved

40. A. Nervous     B. Serious         C. Careful         D. Curios

41. A. packed.     B. opened.        C. picked up       D. put aside

42. A. Angrily     B. Eagerly         C. Calmly          D. Anxiously

43. A. At          B. From           C. With           D. To

44. A. toasting     B. putting         C. forgetting      D. leaving

45. A. until       B. as              C. before          D. unless

46. A. learned .    B. realized.       C. recognized.     D. admitted

47. A. get to      B. search for      C. turn to         D. leave for

48. A. much        B. still           C. hardly          D. quite

49. A. year        B. month           C. week           D. day

50. A. clean       B. read.          C. turn            D. cont

51. A. lost        B. came            C. appeared.       D. dropped

52. A. old.       B. same            C. special         D. new

53 A. remembered.   B. desired.       C. fond.          D. met

54. A. Picture      B. place           C. date            D. met 

55. A. word.        B. information     C. date            D. card 

题型:单项选择题 A1型题

继电器一般不是用来直接控制较强电流的主电路,主要用于反映()信号,同接触器比较,继电器触头的分断能力很小。

题型:单项选择题 A1型题

有关趋势线的说法不正确的是( )。

A.能够成为趋势线的前提必须有趋势存在
B.趋势线被触及的次数多少可用于证明其有效性
C.有第三个点的验证后才能验证该趋势线有效
D.趋势线延续的时间越长就越无效

题型:单项选择题 A1型题

当两部雷达重复频率相差很大且产生干扰时,所出现的干扰图像是:()

A、射线状

B、螺旋线形

C、散乱的光点

D、时隐时现的现象

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