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【多选题】
呼吸的过程是气体交换的过程,气体交换包括肺换气和组织换气,都是以单纯扩散方式实现的,气体的扩散方向总是( )移动,直至动态平衡
A.
压强高处向压强低处
B.
分压高处向分压低处
C.
压强低处向压强高处
D.
分压低处压高处
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参考答案：
举一反三
【多选题】圆明园与其毗连之( ),称为“三园”。
A.
怀春园
B.
长春园
C.
畅春园
D.
万春园
查看完整题目与答案
【单选题】Two of the boys ________ while playing football.
A.
hurt
B.
were hurting
C.
got hurt
D.
had been hurt
查看完整题目与答案
【单选题】Why do American boys do better in math while girls usually excel in reading skills?
A.
Boys are interested in math while girls usually like reading.
B.
Boys have a math gene and girls have inborn reading skills.
C.
Boys get more training in math and girls get more training in reading.
D.
Boys are persupposed to be good at math and girls at reading.
查看完整题目与答案
【单选题】下列属于大气自净作用的是
A.
被植物吸收
B.
污染物进入大气环流
C.
降落到地面又被风吹起再次进人大气
D.
转变成二次污染物
E.
污染物上升至平流层
查看完整题目与答案
【单选题】烧结砖进场检验批数量划分为( )块。
A.
5万
B.
10万
C.
12万
D.
15万
查看完整题目与答案
【简答题】Baby girls make their way directly for dolls as soon as they can crawl, while boys will head for the toy cars,  a study has shown. The findings, the first to show differences in very young babies, sug...
查看完整题目与答案
【单选题】Three students from Changjiang college _____ while saving the ______ boys.
A.
got drown; drowning
B.
got drowned; drowning
C.
were drowned; drowned
D.
were drowning; drowning
查看完整题目与答案
【单选题】为了便于拆装和防止电机轴拉伤，韶山4型电力机车电机轴和小齿轮内孔用（）的锥度通过过盈紧配合连接在一起。
A.
1：6
B.
1：8
C.
l：10
D.
1：12
查看完整题目与答案
【单选题】Why do American boys do better in math while girls usually excel in reading skills?
A.
Boys are interested in math while girls usually like reading.
B.
Boys have a  math gene and girls have inborn reading skills.
C.
Boys get more  training in math and girls get more training in reading.
D.
Boys are presupposed to be good at math and girls at reading.
查看完整题目与答案
【单选题】下列属于大气自净作用的是
A.
被植物吸收
B.
污染物进入大气环流
C.
降落到地面又被风吹起再次进入大气
D.
转变成二次污染物
E.
污染物上升至平流层
查看完整题目与答案
相关题目：
【多选题】圆明园与其毗连之( ),称为“三园”。
A.
怀春园
B.
长春园
C.
畅春园
D.
万春园
查看完整题目与答案
【单选题】Two of the boys ________ while playing football.
A.
hurt
B.
were hurting
C.
got hurt
D.
had been hurt
查看完整题目与答案
【单选题】Why do American boys do better in math while girls usually excel in reading skills?
A.
Boys are interested in math while girls usually like reading.
B.
Boys have a math gene and girls have inborn reading skills.
C.
Boys get more training in math and girls get more training in reading.
D.
Boys are persupposed to be good at math and girls at reading.
查看完整题目与答案
【单选题】下列属于大气自净作用的是
A.
被植物吸收
B.
污染物进入大气环流
C.
降落到地面又被风吹起再次进人大气
D.
转变成二次污染物
E.
污染物上升至平流层
查看完整题目与答案
【单选题】烧结砖进场检验批数量划分为( )块。
A.
5万
B.
10万
C.
12万
D.
15万
查看完整题目与答案
【简答题】Baby girls make their way directly for dolls as soon as they can crawl, while boys will head for the toy cars,  a study has shown. The findings, the first to show differences in very young babies, sug...
查看完整题目与答案
【单选题】Three students from Changjiang college _____ while saving the ______ boys.
A.
got drown; drowning
B.
got drowned; drowning
C.
were drowned; drowned
D.
were drowning; drowning
查看完整题目与答案
【单选题】为了便于拆装和防止电机轴拉伤，韶山4型电力机车电机轴和小齿轮内孔用（）的锥度通过过盈紧配合连接在一起。
A.
1：6
B.
1：8
C.
l：10
D.
1：12
查看完整题目与答案
【单选题】Why do American boys do better in math while girls usually excel in reading skills?
A.
Boys are interested in math while girls usually like reading.
B.
Boys have a  math gene and girls have inborn reading skills.
C.
Boys get more  training in math and girls get more training in reading.
D.
Boys are presupposed to be good at math and girls at reading.
查看完整题目与答案
【单选题】下列属于大气自净作用的是
A.
被植物吸收
B.
污染物进入大气环流
C.
降落到地面又被风吹起再次进入大气
D.
转变成二次污染物
E.
污染物上升至平流层
查看完整题目与答案
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