因果推断中的必要条件是() A.因先于果 B.关联强度大 C.关联可重复出现 D.存

题型:单项选择题

问题:

因果推断中的必要条件是()

A.因先于果

B.关联强度大

C.关联可重复出现

D.存在剂量反应关系

E.病因和疾病分布一致

考点:北京住院医师公共卫生学Ⅰ阶段北京住院医师公共卫生学(综合练习)北京住院医师公共卫生学(综合练习)题库
题型:单项选择题

多巴胺D2受体()。

A.123I-IBZM

B.11C-QNB

C.18F-setoperone

D.99mTc-奥曲肽

E.11C-carfentanil

题型:单项选择题
A strong wind was blowing hard, thunder was rumbling, and lightning flashed across the dark sky. Rain was    36  down; it looked as if heaven had been broken open.
Gleams of light appeared from windows of   37  houses, shining like jewels in all the dark.
A   38  woman dressed in rags and trembling with cold was   39  on a lonely road, while the merciless rain was   40  her without pause. She knocked at the door, and a   41  answered it. She begged him to let her stay a while   42  . The boy then let her into the sitting room and   43  her sitting by the fire.
The woman   44  old and tired under the bright electric light,   45  she was only in her early thirties. She sat   46  for a moment, and then her eyes began to look about the   47  . When her wandering eyes rested on the picture of a young man, she   48 up, looking thunderstruck. Just then, the boy came with his   49 . The man at once recognized the woman as his   50 . They had   51  touch with each other during the war, and he thought he had lost her forever.
  52  words needed to be spoken, They embraced each other   53  the boy stared at them, puzzled.
The storm was over and the sky cleared. Feeling very   54 , the couple stood face to face with their child between them, watching the rain as it gradually   55 .
小题1:
A.pouringB.fallingC.droppingD.flooding
小题2:
A.poorB.blackC.farawayD.nearby
小题3:
A.richB.beautifulC.poorD.ugly
小题4:
A.cryingB.wanderingC.strugglingD.wondering
小题5:
A.strikingB.hittingC.flowingD.beating
小题6:
A.boyB.girlC.womanD.man
小题7:
A.outB.nearC.outsideD.inside
小题8:
A.madeB.leftC.askedD.told
小题9:
A.becameB.showedC.appearedD.sounded
小题10:
A.soB.andC.howeverD.though
小题11:
A.straightB.thirstyC.hungryD.still
小题12:
A.roomB.houseC.pictureD.fire
小题13:
A.pickedB.stoodC.cameD.looked
小题14:
A.fatherB.motherC.friendD.brother
小题15:
A.wifeB.sisterC.motherD.girlfriend
小题16:
A.keptB.gotC.madeD.lost
小题17:
A.MuchB.ManyC.NoD.Not
小题18:
A.asB.whileC.whenD.since
小题19:
A.disappointedB.sorryC.happyD.sad
小题20:
A.beganB.stoppedC.endedD.wanted
题型:单项选择题

系统型式的选择应根据防护区的总体布局、火灾的危害程度、火灾的种类和扑救条件等因素,经综合技术经济比较后确定。()

题型:单项选择题

下列词语中如有错别字,请加以改正。(4分)

相形见拙( )

题型:单项选择题

咽部灼伤行中和治疗时忌用的中和剂是()。

A.牛奶

B.蛋清

C.碳酸氢钠

D.镁乳

E.氢氧化铝凝胶

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