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【单选题】
若空气的组成是21.0%（体积分数）的O2及79%的N2，大气压力为100kPa，那么O2的分压力是（ ）。
A.
92kPa
B.
43kPa
C.
21kPa
D.
53 kPa
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举一反三
【单选题】在......之间(三者)
A.
B.
among
C.
along
D.
afraid
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【单选题】One of the advantages of credit cards is that______.
A.
there are many kinds of credit cards
B.
they are not easy to lose
C.
they can be canceled after being stolen
D.
they are easy to carry with
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【单选题】The cards that are wildly used now are credit.cards.
A.
Right
B.
Wrong
C.
Not mentioned
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【单选题】不属于肛管内面结构的是
A.
白线
B.
痔环
C.
齿状线
D.
回盲瓣
E.
肛柱
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【多选题】属于肛管内面结构的是
A.
肛柱
B.
肛瓣
C.
肛窦
D.
齿状线
E.
肛梳
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【单选题】在 ......中间 ; 在(三者或三者以上)之间
A.
between
B.
beside
C.
behind
D.
among
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【单选题】在设计阶段，投资、质量、进度三者最重要的是（ ）
A.
投资
B.
质量
C.
进度
D.
三者之间的关系
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【单选题】-What are the people doing? -__________ [     ]
A.
These are playing cards.
B.
They are playing cards.
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【判断题】Business cards are cards bearing business information about a company or individual.()
A.
正确
B.
错误
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【单选题】Smart cards are like ______ cards.
A.
Telephone
B.
ldentification
C.
Interactive television
D.
Golden tax
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相关题目：
【单选题】在......之间(三者)
A.
B.
among
C.
along
D.
afraid
查看完整题目与答案
【单选题】One of the advantages of credit cards is that______.
A.
there are many kinds of credit cards
B.
they are not easy to lose
C.
they can be canceled after being stolen
D.
they are easy to carry with
查看完整题目与答案
【单选题】The cards that are wildly used now are credit.cards.
A.
Right
B.
Wrong
C.
Not mentioned
查看完整题目与答案
【单选题】不属于肛管内面结构的是
A.
白线
B.
痔环
C.
齿状线
D.
回盲瓣
E.
肛柱
查看完整题目与答案
【多选题】属于肛管内面结构的是
A.
肛柱
B.
肛瓣
C.
肛窦
D.
齿状线
E.
肛梳
查看完整题目与答案
【单选题】在 ......中间 ; 在(三者或三者以上)之间
A.
between
B.
beside
C.
behind
D.
among
查看完整题目与答案
【单选题】在设计阶段，投资、质量、进度三者最重要的是（ ）
A.
投资
B.
质量
C.
进度
D.
三者之间的关系
查看完整题目与答案
【单选题】-What are the people doing? -__________ [     ]
A.
These are playing cards.
B.
They are playing cards.
查看完整题目与答案
【判断题】Business cards are cards bearing business information about a company or individual.()
A.
正确
B.
错误
查看完整题目与答案
【单选题】Smart cards are like ______ cards.
A.
Telephone
B.
ldentification
C.
Interactive television
D.
Golden tax
查看完整题目与答案