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【单选题】
维持胸膜腔内负压的前提条件是A.
呼吸肌舒缩
B.
胸廓扩张阻力
C.
呼吸道存在一定阻力
D.
胸膜腔密闭
E.
胸膜腔与有少量气体
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举一反三
【单选题】The established church of Britain is ________.
A.
The Church of Scotland
B.
Free churches
C.
The United Reformed Church
D.
The Church of England
【单选题】Most Irish people go to ______ church every Sunday and ______ church plays ______ important part in their life.
A.
/; the; /
B.
/; the; an
C.
the; /; an
D.
/; a; the
【单选题】The established church of Britain is __ .
A.
The Church of England
B.
Free church
C.
The United Reformed Church
D.
The Church of Scotland
【单选题】某学院有四个不同环境的生化实验室、分别养有18、24、54、48只小白鼠供实验用，某项实验需抽取24只小白鼠，你认为最合适的抽样方法为（ ）
A.
在每个生化实验室各抽取6只
B.
把所有小白鼠都加上编有不同号码的项圈，用随机取样法确定24只
C.
在四个生化实验室分别随手提出3、4、9、8只
D.
先确定这四个生化实验室应分别抽取3、4、9、8只样品，再由各生化实验室自己加号码项圈，用简单随机抽样法确定各自的捕出对象
【单选题】The esatablished church of Britain is ( )
A.
The church of England
B.
The church of Scotland
C.
Free churches
D.
The United Reformed church
【单选题】给实验用的正常小白鼠注射一定剂量的胰岛素后，小白鼠进入休克状态，要使其尽快复苏，可适量注射一定浓度的（ ）
A.
生理盐水
B.
淀粉溶液
C.
蛋白质溶液
D.
葡萄糖溶液
【单选题】The Church of England is the English branch of the Western Christian Church, which combines ______ and ______ traditions.
A.
Catholic Presbyterian
B.
Catholic Protestant
C.
Protestant Presbyterian
D.
Protestant Eastern Orthodox
【单选题】Most Irish people go to ______ church every Sunday and ______ church plays ______ important part in their life.
A.
/; the; /
B.
/; the; an
C.
the; /; a
D.
/; a; the
【简答题】简述NAT(网络地址转换)的基本原理和工作机制。
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