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【单选题】
When early humans hunted and gathered food, they were not in control of their environment. They could only interact with their surroundings as lower organisms did. When humans learned to make fire, however, they became capable of altering or changing their environment. To provide themselves with fuel they stripped bark from trees, causing the trees to die. Clearings were burned in forests to increase the growth of grass and to provide a greater grazing area fro the wild animals that humans fed upon. This development led to farming and the domestication of animals. Fire also provided the means for cooking plants which has previously been inedible. Only when the process of meeting the basic need for food reached a certain level of sophistication was it possible for humans to follow other pursuits such as the founding of cities. According to the passage, early humans gained better control of their environment when they learned to .
A.
eat meat
B.
make fire
C.
live with lower organisms
D.
improve their hunting skills
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【单选题】以下哪项治疗可改善再生障碍性贫血的造血功能:
A.
脾切除
B.
应用维生素B 12
C.
应用叶酸
D.
应用糖皮质激素
E.
应用雄激素
【简答题】中青年PaO2的正常值是
【单选题】动脉血气分析监测数值, PaO 2 的正常值是:
A.
35 ~ 45mmHg
B.
80 ~ 100mmHg
C.
35 ~ 45cmH2O
D.
80 ~ 100cmH2O
E.
40 ~ 80mmHg
【简答题】突发事件应对机制的主要构成部分包括();善后协调机制;预警机制;反馈机制。
【单选题】PaO2的正常值为?
A.
80-100mmHg
B.
70-100mmHg
C.
75-100mmHg
D.
85-100mmHg
E.
95-100mmHg
【多选题】突发事件的主要构成要件包括()
A.
突然发生或即将发生
B.
突然发生
C.
造成或者可能造成严重社会危害
D.
需要采取应急处置措施予以应对
【单选题】某企业材料采用计划成本法核算。月初结存材料的计划成本为 130万元,材料成本差异为节约20万元。当月购入材料一批,实际成本110万元,计划成本120万元,领用材料的计划成本为100万元。该企业当月领用材料的实际成本为( )万元。
A.
96
B.
88
C.
100
D.
112
【单选题】PaO2的正常值是
A.
50-60mmHg
B.
80-100mmHg
C.
70-80mmHg
D.
40-50mmHg
E.
60-70mmHg
【单选题】Ⅱ型呼吸衰竭的血气变化是
A.
PaO2下降,PaCO2正常
B.
PaO2正常,PaCO2增高
C.
PaO2下降,PaCO2增高
D.
PaO2增高,PaCO2下降
E.
PaO2、PaCO2均下降
【单选题】PaO 2 的正常范围()
A.
80~100mmHg
B.
70~80mmHg
C.
100~120mmHg
D.
60~70mmHg
E.
>120mmHg
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