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()5月中央人民政府同西藏地方达成《关于和平解放西藏办法的协议》，西藏和平解放。 a、1950年 b、1951年 c、1952年
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【单选题】维持胸内负压的必要条件是
A.
呼吸道内存在一定压力
B.
吸气肌收缩
C.
胸膜腔密闭
D.
肺内压低于大气压
查看完整题目与答案
【单选题】维持胸内负压的必要条件是
A.
胸膜腔密闭
B.
吸气肌收缩
C.
胸内压低于大气压
D.
呼吸道存在一定阻力
E.
呼气肌收缩
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【单选题】维持胸内负压的必要条件是
A.
吸气肌收缩
B.
胸膜腔密闭
C.
呼气肌收缩
D.
肺内压低于大气压
E.
肺内压高于大气压
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【单选题】Who is responsible for the acceleration of the urbanizing process in many developing countries?
A.
City-dwellers.
B.
Country-dwellers.
C.
Governments.
D.
Environmentalists.
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【单选题】维持胸内负压的必要条件是
A.
膈肌收缩
B.
肋间外肌收缩
C.
胸膜腔密闭性
D.
肺内压高于大气压
E.
肺内压低于大气压
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【单选题】The direction of the acceleration of the block (after leaving the ramp) at position R is best represented by which of the arrows in the diagram?
A.
Arrow 2
B.
Arrow 3
C.
Arrow 5
D.
Arrow 6
E.
None of the arrows, the acceleration is zero.
查看完整题目与答案
【单选题】维持胸内负压的必要条件是
A.
吸气肌收缩
B.
呼气肌收缩
C.
胸膜腔密闭
D.
肺内压高于大气压
E.
肺内压低于大气压
查看完整题目与答案
【单选题】The direction of the acceleration of the block when in position Q is best represented by which of the arrows in the diagram?
A.
Arrow 1
B.
Arrow 3
C.
Arrow 5
D.
Arrow 7
E.
None of the arrows, the acceleration is zero
查看完整题目与答案
【单选题】To the author E-mail is______.
A.
the authority on the acceleration of life pace
B.
the essence of life
C.
both the catalyst and the instrument of the change in human interaction
D.
the living embodiment of human connection in all areas
查看完整题目与答案
【单选题】Orbits decay due to ______.
A.
the acceleration of the spacecraft
B.
the crash with small amounts of air molecules
C.
the invention and application of solar sails
D.
the existence of air molecules
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相关题目：
【单选题】维持胸内负压的必要条件是
A.
呼吸道内存在一定压力
B.
吸气肌收缩
C.
胸膜腔密闭
D.
肺内压低于大气压
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【单选题】维持胸内负压的必要条件是
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【单选题】维持胸内负压的必要条件是
A.
吸气肌收缩
B.
胸膜腔密闭
C.
呼气肌收缩
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肺内压低于大气压
E.
肺内压高于大气压
查看完整题目与答案
【单选题】Who is responsible for the acceleration of the urbanizing process in many developing countries?
A.
City-dwellers.
B.
Country-dwellers.
C.
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D.
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查看完整题目与答案
【单选题】维持胸内负压的必要条件是
A.
膈肌收缩
B.
肋间外肌收缩
C.
胸膜腔密闭性
D.
肺内压高于大气压
E.
肺内压低于大气压
查看完整题目与答案
【单选题】The direction of the acceleration of the block (after leaving the ramp) at position R is best represented by which of the arrows in the diagram?
A.
Arrow 2
B.
Arrow 3
C.
Arrow 5
D.
Arrow 6
E.
None of the arrows, the acceleration is zero.
查看完整题目与答案
【单选题】维持胸内负压的必要条件是
A.
吸气肌收缩
B.
呼气肌收缩
C.
胸膜腔密闭
D.
肺内压高于大气压
E.
肺内压低于大气压
查看完整题目与答案
【单选题】The direction of the acceleration of the block when in position Q is best represented by which of the arrows in the diagram?
A.
Arrow 1
B.
Arrow 3
C.
Arrow 5
D.
Arrow 7
E.
None of the arrows, the acceleration is zero
查看完整题目与答案
【单选题】To the author E-mail is______.
A.
the authority on the acceleration of life pace
B.
the essence of life
C.
both the catalyst and the instrument of the change in human interaction
D.
the living embodiment of human connection in all areas
查看完整题目与答案
【单选题】Orbits decay due to ______.
A.
the acceleration of the spacecraft
B.
the crash with small amounts of air molecules
C.
the invention and application of solar sails
D.
the existence of air molecules
查看完整题目与答案