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【多选题】
以下关于吸氧的浓度说法正确的是
A.
浓度低于25%无治疗价值
B.
常压下吸入40%~60%的氧浓度是安全的
C.
高于60%的氧浓度，持续时间超过12小时，就会氧中毒
D.
空气中的氧浓度占23.4%
E.
医院95%氧气
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参考答案：
举一反三
【单选题】下列关于清洁剂的使用说法错误的是()
A.
浓缩液体清洁剂使用前必须严格按照使用说明进行稀释
B.
清洁剂经稀释后,最好装在高压气压瓶内通过挤压使用
C.
为使用安全,应配备相应的防护用具,如橡胶手套
D.
使用清洁剂不需要防护
查看完整题目与答案
【判断题】全球变化背景下，极端气候的频度和强度增加
A.
正确
B.
错误
查看完整题目与答案
【单选题】对尤里性格特征形成影响最大的人是()。
A.
他的妻子
B.
他的舅父
C.
他的情人
查看完整题目与答案
【单选题】下列关于清洁剂的使用说法错误的是 。
A.
浓缩液体清洁剂使用前必须严格按照使用说明进行稀释
B.
平时应多做清洁工作，注意保养
C.
为使用安全，应配备相应的防护用具。如橡胶手套
D.
清洁剂经稀释后，最好装在高压气压瓶内通过挤压使用
查看完整题目与答案
【单选题】Select the false statement about the G protein hormone receptor system.
A.
This system is an example of membrane based signal transduction.
B.
The hormone is the ligand of G protein.
C.
This system results in amplification of the original signal.
D.
The G protein must be able to move about along the membrane.
查看完整题目与答案
【单选题】The false statement about the2, 3-BPGshunt pathway is
A.
exist ing in various cells
B.
The content s of 2,3-BPG are high in red blood cells.
C.
2,3-BPG in erythrocyte s lower hemoglobin affinity for oxygen.
D.
In the same P O 2 , O 2 released by Hb increases with the increase of 2,3-BPG concentration.
查看完整题目与答案
【判断题】在局域网中,主要使用同轴电缆作为传输线。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Choose the FALSE statement(s) ( )
A.
Neurotransmitters that increase postsynaptic membrane permeability to sodium ions and triggers nerve impulses are said to be excitatory.
B.
Fibers that originate from different parts of the nervous system and lead to the same neuron are exhibiting convergence.
C.
The cerebellum is the portion of the brain located in the back of the head between the cerebrum and the brain stem. It controls your balance and coordination.
D.
The basal ganglia are a group of nuclei situated at the base of the forebrain. They are associated with a variety of functions, including motor control, speech and reasoning.
E.
The brain stem is composed of the medulla, pons and middlebrain tissue.
查看完整题目与答案
【单选题】The false statement about bile salts is
A.
synthesized from cholesterol in the liver
B.
inhibit the formation of cholesterol stones
C.
metabolites of bile pigment s
D.
reabsorbed by enterohepatic circulation
查看完整题目与答案
【单选题】The false statement about physiological significancesof gluconeogenesis is
A.
provide b lood glucose
B.
p romote glucose consumption in muscle cells
C.
Gluconeogenesis is an important way to replenish or restore glycogen reserve in liver
D.
The enhancement of renal gluconeogenesis is beneficial to maintain the acid-base balance .
查看完整题目与答案
相关题目：
【单选题】下列关于清洁剂的使用说法错误的是()
A.
浓缩液体清洁剂使用前必须严格按照使用说明进行稀释
B.
清洁剂经稀释后,最好装在高压气压瓶内通过挤压使用
C.
为使用安全,应配备相应的防护用具,如橡胶手套
D.
使用清洁剂不需要防护
查看完整题目与答案
【判断题】全球变化背景下，极端气候的频度和强度增加
A.
正确
B.
错误
查看完整题目与答案
【单选题】对尤里性格特征形成影响最大的人是()。
A.
他的妻子
B.
他的舅父
C.
他的情人
查看完整题目与答案
【单选题】下列关于清洁剂的使用说法错误的是 。
A.
浓缩液体清洁剂使用前必须严格按照使用说明进行稀释
B.
平时应多做清洁工作，注意保养
C.
为使用安全，应配备相应的防护用具。如橡胶手套
D.
清洁剂经稀释后，最好装在高压气压瓶内通过挤压使用
查看完整题目与答案
【单选题】Select the false statement about the G protein hormone receptor system.
A.
This system is an example of membrane based signal transduction.
B.
The hormone is the ligand of G protein.
C.
This system results in amplification of the original signal.
D.
The G protein must be able to move about along the membrane.
查看完整题目与答案
【单选题】The false statement about the2, 3-BPGshunt pathway is
A.
exist ing in various cells
B.
The content s of 2,3-BPG are high in red blood cells.
C.
2,3-BPG in erythrocyte s lower hemoglobin affinity for oxygen.
D.
In the same P O 2 , O 2 released by Hb increases with the increase of 2,3-BPG concentration.
查看完整题目与答案
【判断题】在局域网中,主要使用同轴电缆作为传输线。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Choose the FALSE statement(s) ( )
A.
Neurotransmitters that increase postsynaptic membrane permeability to sodium ions and triggers nerve impulses are said to be excitatory.
B.
Fibers that originate from different parts of the nervous system and lead to the same neuron are exhibiting convergence.
C.
The cerebellum is the portion of the brain located in the back of the head between the cerebrum and the brain stem. It controls your balance and coordination.
D.
The basal ganglia are a group of nuclei situated at the base of the forebrain. They are associated with a variety of functions, including motor control, speech and reasoning.
E.
The brain stem is composed of the medulla, pons and middlebrain tissue.
查看完整题目与答案
【单选题】The false statement about bile salts is
A.
synthesized from cholesterol in the liver
B.
inhibit the formation of cholesterol stones
C.
metabolites of bile pigment s
D.
reabsorbed by enterohepatic circulation
查看完整题目与答案
【单选题】The false statement about physiological significancesof gluconeogenesis is
A.
provide b lood glucose
B.
p romote glucose consumption in muscle cells
C.
Gluconeogenesis is an important way to replenish or restore glycogen reserve in liver
D.
The enhancement of renal gluconeogenesis is beneficial to maintain the acid-base balance .
查看完整题目与答案
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