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【多选题】
下列物质通过细胞膜转运属于主动过程的有A.
胞浆中的Ca2+回收到肌浆网
B.
兴奋后膜内外离子浓度的恢复
C.
动作电位的去极化
D.
动作电位的复极化
E.
电位的产生
拍照语音搜题，微信中搜索"皮皮学"使用
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【单选题】在 8253 的 6 种工作方式中,既可以软件启动也可以硬件启动的工作方式是( )。
A.
方式 0 和方式 4
B.
方式 2 和方式 3
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【单选题】在 8253 的 6 种工作方式中,既可以软件启动也可以硬件启动的工作方式是( )。
A.
方式 1 和方式 5
B.
方式 2 和方式 4
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D.
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【单选题】Societies change over time while their reputations【C1】______behind. Many things which are often regarded as【C2】______British derive from books, songs or plays which were written a long time ago and wh...
A.
leave
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follow
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lack
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