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【单选题】
维持时细胞膜内外的Na和K浓度差的是
A.
膜上ATP的作用
B.
膜上的Na+-K+泵作用
C.
Na+、K+扩散的结果
D.
Na+-K+交换
E.
膜对Na+、K+单纯扩散
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参考答案：
举一反三
【单选题】中药一级保护品种的保护期限可以为
A.
5年
B.
7年
C.
10年
D.
15年
查看完整题目与答案
【单选题】Most dictionaries will tell you a number of【21】about a language. There are three things in particular that【22】important. These three things are spelling, pronunciation, and meanings. The first and mos...
A.
books
B.
people
C.
things
D.
thing
查看完整题目与答案
【单选题】Directions: After reading the following passage, you will find a question or unfinished statement. For each question or statement there are 4 choices marked A, B, C and D. You should make the correct ...
A.
the importance of key employees
B.
how to challenge your employees
C.
how to keep your employees
D.
the difference between “push” and “pull”
查看完整题目与答案
【多选题】中药一级保护品种的保护期限为( )年。
A.
30
B.
20
C.
10
D.
7
查看完整题目与答案
【判断题】中药一级保护品种的保护期限分别为三十年、二十年、十年。( )
A.
正确
B.
错误
查看完整题目与答案
【判断题】当代战争的决定因素是高科技武器。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Why can' t we provide as many houses as needed?
A.
Because we cannot make the choice.
B.
Because we do not have enough resources.
C.
Because we do not have a free housing market.
D.
Because education is more important than housing.
查看完整题目与答案
【单选题】In the present economic ______ we cannot make even greater progress than previously.
A.
air
B.
area
C.
climate
D.
mood
查看完整题目与答案
【单选题】Most dictionaries will tell you a number of【21】about a language. There are three things in particular that【22】important. These three things are spelling, pronunciation, and meanings. The first and mos...
A.
thing
B.
people
C.
things
D.
books
查看完整题目与答案
【单选题】We cannot make resources ,but gather them from the earth .
A.
natural
B.
nature
查看完整题目与答案
相关题目：
【单选题】中药一级保护品种的保护期限可以为
A.
5年
B.
7年
C.
10年
D.
15年
查看完整题目与答案
【单选题】Most dictionaries will tell you a number of【21】about a language. There are three things in particular that【22】important. These three things are spelling, pronunciation, and meanings. The first and mos...
A.
books
B.
people
C.
things
D.
thing
查看完整题目与答案
【单选题】Directions: After reading the following passage, you will find a question or unfinished statement. For each question or statement there are 4 choices marked A, B, C and D. You should make the correct ...
A.
the importance of key employees
B.
how to challenge your employees
C.
how to keep your employees
D.
the difference between “push” and “pull”
查看完整题目与答案
【多选题】中药一级保护品种的保护期限为( )年。
A.
30
B.
20
C.
10
D.
7
查看完整题目与答案
【判断题】中药一级保护品种的保护期限分别为三十年、二十年、十年。( )
A.
正确
B.
错误
查看完整题目与答案
【判断题】当代战争的决定因素是高科技武器。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Why can' t we provide as many houses as needed?
A.
Because we cannot make the choice.
B.
Because we do not have enough resources.
C.
Because we do not have a free housing market.
D.
Because education is more important than housing.
查看完整题目与答案
【单选题】In the present economic ______ we cannot make even greater progress than previously.
A.
air
B.
area
C.
climate
D.
mood
查看完整题目与答案
【单选题】Most dictionaries will tell you a number of【21】about a language. There are three things in particular that【22】important. These three things are spelling, pronunciation, and meanings. The first and mos...
A.
thing
B.
people
C.
things
D.
books
查看完整题目与答案
【单选题】We cannot make resources ,but gather them from the earth .
A.
natural
B.
nature
查看完整题目与答案
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