蒸汽流量测量为什么要进行密度自动补偿？

纤维空洞型肺结核（）。
肺原发综合征（）。

A.X线示肺门哑铃状阴影

B.X线示边缘模糊的云雾状阴影

C.X线示肺尖部单个结节状病灶

D.X线示肺上叶2～5cm的孤立结节，周围毛刺灶状

E.X线示肺内多个空洞，壁较厚

外部经济

完形填空（共20小题，20分）

The sun was shining when I got on No. 151 bus. We passengers sat jammed in heavy clothes. No one  36 . That’s one of the unwritten rules  37 we see the same faces every day, we prefer to  38 behind our newspapers. People who sit so close together are using them to keep  39  distance.

As the bus came near the Mile, a  40 suddenly rang out, “Attention! This is your  41 speaking.” We looked at the back of the driver’s head. “Put your  42 down, all of you.” The papers came down. “Now, turn and  43 the person next to you.”

Surprisingly we all did it. Still no one smiled. I faced an old woman. I saw her  44 every day. We waited for the next  45 from the driver. “Now repeat after me. Good morning, neighbor!”

But our voices were a little  46 . For many of us, this was the  47 word we had spoken that day. When we said them together, like  48  to people beside us, we couldn’t help  49 . There was the feeling of relief. Moreover, there was the sense of ice being  50 . To say the three words was not so  51 after all.

The bus driver said nothing more. He didn’t  52 to. Not a single newspaper went back up. I heard laughter, a  53 sound I had never heard before in this bus.

When I  54 my stop, I said goodbye to my seatmate, and then  55 the bus. That day I was starting happily.

36. A. spoke         B. said          C. stood        D. told 

37. A. as            B. because       C. when        D. although

38. A. read          B. sit            C. talk         D. hide 

39. A. ours          B. your          C. their         D. its

40. A. call           B. noise         C. sound        D. voice

41. A. conductor      B. driver        C. neighbor     D. seatmate

42. A. papers        B. bags          C. books        D. clothes

43. A. see          B. meet           C. face         D. greet

44. A. still          B. nearly         C. even         D. hardly

45. A. turn         B. talk           C. order         D. remark

46. A. loud         B. neat          C. slow          D. weak

47. A. first         B. last           C. best          D. only

48. A. passengers    B. citizens        C. patients     D. school children

49. A. shouting      B. crying        C. smiling       D. wondering

50. A. formed       B. heated         C. broken        D. frozen

51. A. sad          B. hard           C. ordinary       D. shy

52. A. need         B. want           C. like          D. begin

53. A. different      B. warm          C. loud          D. happy

54. A. arrived       B. reached        C. left           D. found 

55. A. jumped off    B. left for         C. got on        D. waited for

下列可增强氧气与血红蛋白结合的因素是

A．O₂分压增高

B．CO₂浓度升高

C．温度升高

D．氢离子浓度升高

E．2，3—二磷酸甘油酸增多

当一般的手阀盘根有滴漏现象时，应该上紧盘根。