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【单选题】
妊娠37患者,早晨醒来时发现躺在血泊中,急诊送入院,查:血压90/60mmHg,脉搏120次/分,神清,37cm,臀先露,,胎心音160次/分,骨盆正常,阴道少量活动性流血。请问选哪项处理最恰当A.
期待疗法
B.
人工破膜
C.
在输血输液的同时行剖宫产
D.
臀位牵引术
E.
催产素滴注引产
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举一反三
【单选题】According to the passage,as the nineteenth century progressed,the people of the United States_____.
A.
emigrated to other countries
B.
often settled in the West
C.
tended to change the place in which they lived
D.
had a higher rate of birth than ever before
【单选题】模型dN/dt=rN(k-N)/k或 N=k/(1+e a-rt ) ( N 为个体数量; t 为时间; r 为瞬时增长率; K 为承载力 ) 反映的是:
A.
种群在无限环境下的指数增长模型
B.
种群在有限环境下的Logistic增长模型
【单选题】眼的屈光状态取决于
A.
屈光面的曲率半径、屈光介质的屈光指数
B.
屈光面的曲率半径、屈光介质的屈光指数、虹膜的颜色
C.
屈光面的曲率半径、角膜和晶状体的清晰度
D.
屈光面的曲率半径、屈光介质的屈光指数、屈光介质间的位置
E.
屈光面的曲率半径、屈光介质间的位置
【单选题】By the end of the eighteenth century, the publishers of children’s looks in the United States were most concerned about which of the following?
A.
Attracting children with entertaining stories that provided lessons of correct behavior
B.
Publishing literature consisting of exciting stories that would appeal to both children and adults
C.
Expanding markets for books in both Britain and the United States
D.
Reprinting fictional books from earlier in the century
【单选题】What is the generation with a sudden, large increase in birthrate called in the United States after World War Ⅱ from 1947 to 1961?
A.
Baby Boomer.
B.
Lost Generation.
C.
Yuppies.
D.
Dinks.
【单选题】In the passage the author suggests that the counterculture______
A.
destroyed the United States
B.
changed some American values
C.
was not important in the United States
D.
brought people more leisure time with their families
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