皮皮学，免费搜题
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【单选题】
矽肺是一种常见的职业病,其发生的主要原因是,细胞溶酶体膜受损,其稳定性发生改变,导致溶酶体释放,结果造成肺功能障碍甚至丧失。引发溶酶体膜破裂的机理是( )A.
矽尘颗粒对溶酶体膜的直接机械损伤
B.
带有负电荷的矽尘颗粒与溶酶体膜结合导致其破裂,溶酶体酶外泄,引起巨噬细胞自溶
C.
带有正电荷矽尘颗粒不与溶酶体膜结合导致其破裂,溶酶体酶外泄,引起巨噬细胞自溶
D.
矽尘颗粒沉积在肺组织间隙,导致肺组织纤维化,降低肺的弹性,引起肺功能障碍
E.
吸入肺内的矽尘颗粒刺激肺泡导致肺泡受损,肺泡的舒缩功能丧失,引起肺功能障碍
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皮皮学刷刷变学霸
举一反三
【单选题】Although Jim is happy with his success he wonders ______ will happen to his private life.
A.
that
B.
what
C.
this
D.
it
【单选题】His private actions are in direct __________ with his publicly expressed opinion.
A.
conversation
B.
contradiction
C.
contribution
D.
connection
【单选题】A cabinet officer in Mediterranean countries-has large reception area outside his private office because he ______ .
A.
is living in a P-time system country
B.
feels comfortable to have a large space
C.
doesn't like to talk with people in private
D.
wants to show he is open and demonstrative
【简答题】save()和load()方法有哪些相同和不同之处?
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