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【单选题】
肺的微细结构中导气部的变化特点错误的是A.
粘膜逐渐变薄
B.
上复层纤毛柱状上皮逐渐变为单层纤毛柱状上皮
C.
粘膜下层的腺体逐渐增多
D.
平滑肌相对增多
E.
外膜中的软骨变为软骨碎片
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皮皮学刷刷变学霸
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【简答题】Rig
【单选题】Which part of a conventional cargo gear rig provides for vertical control and positioning of a boom ________．
A.
Cargo whip
B.
Gooseneck fitting
C.
Spider band
D.
Topping lift
【单选题】who is the essay on the foundation of ethics, under the title The Two Fundamental Problems of Ethics?
A.
Schopenhauer
B.
Kant
C.
Plato
D.
Descarte
【简答题】rotary rig ( )
【单选题】Fighting a rig fire in a watertight compartment with hoses could reduce the stability of the rig by（）.
A.
progressive downflooding
B.
reducing the level of drill water from the storage tanks
C.
causing a list due to the water in the compartment
D.
reducing the KG to minimum allowable
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