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【单选题】
通常情况下,细胞外液和细胞内液Na+和K+浓度的差别主要由什么产生和维持( )
A.
渗透压
B.
钠—钾泵
C.
离子通道
D.
酸碱度
题目标签:
细胞内液
胞外液
细胞外液
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参考答案:
D
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纠错
举一反三
The fruit has been setting there for ten days and now is giving off a ______ smell,so we must throw it away.
A.
sweet
B.
sour
C.
horrible
D.
salty
查看完整题目与答案
It is ______ that we can’t finish it on time.
A.
so a hard job
B.
such hard a work
C.
such a hard job
D.
so hard a work
查看完整题目与答案
Our teacher ______ himself to teaching, so we should study hard to repay him.
A.
devotes
B.
engages
C.
addicts
D.
attributes
查看完整题目与答案
When both of my parents ______ London, I had no one to depend on.
A.
have gone to
B.
had been to
C.
have been to
D.
had gone to
查看完整题目与答案
He found that his house had been ______ and some important files were lost.
A.
broken into
B.
taken out
C.
made into
D.
run out
查看完整题目与答案
相关题目:
The fruit has been setting there for ten days and now is giving off a ______ smell,so we must throw it away.
A.
sweet
B.
sour
C.
horrible
D.
salty
查看完整题目与答案
It is ______ that we can’t finish it on time.
A.
so a hard job
B.
such hard a work
C.
such a hard job
D.
so hard a work
查看完整题目与答案
Our teacher ______ himself to teaching, so we should study hard to repay him.
A.
devotes
B.
engages
C.
addicts
D.
attributes
查看完整题目与答案
When both of my parents ______ London, I had no one to depend on.
A.
have gone to
B.
had been to
C.
have been to
D.
had gone to
查看完整题目与答案
He found that his house had been ______ and some important files were lost.
A.
broken into
B.
taken out
C.
made into
D.
run out
查看完整题目与答案
参考解析:
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