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【单选题】
人多数细胞产生和维持静息电位的主要原因是
A.
细胞内高K＋浓度和安静时膜主要对K＋有通透性
B.
细胞内高K＋浓度和安静时膜主要对Na＋有通透性
C.
细胞外高Na＋浓度和安静时膜主要对K＋有通透性
D.
细胞内高Na＋浓度和安静时膜主要对Na＋有通透性
E.
细胞外高K＋浓度和安静时膜主要对K＋有通透性
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举一反三
【单选题】______ hearing his father is dead,he feels very sad. [     ]
A.
At
B.
In
C.
Upon
D.
To
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【简答题】完形填空。 Mingming is the 1 student in our class. His father is a 2 in a factory. His mother is a teacher. He 3 a sister and a brother. His sister is 4 younger than him. But she is much 5 than Mingming. H...
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【单选题】在静态时，无论基极偏置电流多大，无论是PNP型还是NPN型，三极管三个极电流总有（）。
A.
IC=IB+IE
B.
IB=IE+IC
C.
IE=IB+IC
D.
IE=（+1）IB
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【简答题】A father is very worried about his son, 小题1:_____acts like a coward. So his father paid a visit to the and 小题2:_____(ask) him to train his son. The said, “I promise I’ll be able to train...
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【单选题】Jim likes his drum very much.He makes a noise( 噪音 ) with it , but his mother doesn't say anything about it.His father is not at home.He is working in a school.So he doesn't hear the noise. Jim's fathe...
A.
a worker
B.
a teacher
C.
a cleaner
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【单选题】在 IMO采纳的分道通航水域，下列哪种说法正确：
A.
任何船舶进入“分隔带”都是一种违规行为
B.
为避免紧迫危险，让路船或直航船均可进入“分隔带”
C.
为避免妨碍沿通航分道行驶的船舶，“操纵能力受到限制的船舶”可以进入“分隔带”行驶
D.
为避免紧迫危险的形成，当事船首先应取得有关主管机关的许可，方可进入
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【单选题】His father is very angry him his study.
A.
at; with
B.
with; at
C.
to; about
查看完整题目与答案
【单选题】在IMO采纳的分道通航水域,下列哪种说法正确?
A.
任何船舶进入“分隔带”都是一种违法行为
B.
为避免紧迫危险,让路船和直航船都可以进入“分隔带”
C.
为避免妨碍沿通航分道行驶的船舶,“操纵能力受到限制的船舶”可以进入分隔带行驶
D.
为避免紧迫危险的形成,当事船首先应取得有关主管机关的许可,方可进入
查看完整题目与答案
【简答题】A．Will's father used his influence to help him in. B．Will's father is a very important guy here. C．Will is a good candidate for the college. D．Will knows nothing about college rules.
查看完整题目与答案
【判断题】混装法通常适用于大多数局部可摘义齿的装盒
A.
正确
B.
错误
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相关题目：
【单选题】______ hearing his father is dead,he feels very sad. [     ]
A.
At
B.
In
C.
Upon
D.
To
查看完整题目与答案
【简答题】完形填空。 Mingming is the 1 student in our class. His father is a 2 in a factory. His mother is a teacher. He 3 a sister and a brother. His sister is 4 younger than him. But she is much 5 than Mingming. H...
查看完整题目与答案
【单选题】在静态时，无论基极偏置电流多大，无论是PNP型还是NPN型，三极管三个极电流总有（）。
A.
IC=IB+IE
B.
IB=IE+IC
C.
IE=IB+IC
D.
IE=（+1）IB
查看完整题目与答案
【简答题】A father is very worried about his son, 小题1:_____acts like a coward. So his father paid a visit to the and 小题2:_____(ask) him to train his son. The said, “I promise I’ll be able to train...
查看完整题目与答案
【单选题】Jim likes his drum very much.He makes a noise( 噪音 ) with it , but his mother doesn't say anything about it.His father is not at home.He is working in a school.So he doesn't hear the noise. Jim's fathe...
A.
a worker
B.
a teacher
C.
a cleaner
查看完整题目与答案
【单选题】在 IMO采纳的分道通航水域，下列哪种说法正确：
A.
任何船舶进入“分隔带”都是一种违规行为
B.
为避免紧迫危险，让路船或直航船均可进入“分隔带”
C.
为避免妨碍沿通航分道行驶的船舶，“操纵能力受到限制的船舶”可以进入“分隔带”行驶
D.
为避免紧迫危险的形成，当事船首先应取得有关主管机关的许可，方可进入
查看完整题目与答案
【单选题】His father is very angry him his study.
A.
at; with
B.
with; at
C.
to; about
查看完整题目与答案
【单选题】在IMO采纳的分道通航水域,下列哪种说法正确?
A.
任何船舶进入“分隔带”都是一种违法行为
B.
为避免紧迫危险,让路船和直航船都可以进入“分隔带”
C.
为避免妨碍沿通航分道行驶的船舶,“操纵能力受到限制的船舶”可以进入分隔带行驶
D.
为避免紧迫危险的形成,当事船首先应取得有关主管机关的许可,方可进入
查看完整题目与答案
【简答题】A．Will's father used his influence to help him in. B．Will's father is a very important guy here. C．Will is a good candidate for the college. D．Will knows nothing about college rules.
查看完整题目与答案
【判断题】混装法通常适用于大多数局部可摘义齿的装盒
A.
正确
B.
错误
查看完整题目与答案