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【单选题】
偶然误差具有有界性、性、补偿性和( )四个特性。
A.
不对称性
B.
对称性
C.
递增性
D.
递减性
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参考答案：
举一反三
【单选题】What are they doing ?
A.
They are taking photos.
B.
They are shooting films.
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【单选题】下列各组物质中互为同系物的一组是
A.
C H 与C H
B.
CH =CH-CH 和CH =CH-CH -CH
C.
乙烯与聚乙烯
D.
与
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【单选题】下列各组物质中，互为同系物的是 [     ]
A.
苯甲醇和苯酚
B.
丙烯和丙炔
C.
甲烷与2－甲基丙烷
D.
乙酸和乙酸乙酯
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【单选题】What are they doing?
A.
They are travel.
B.
They are shopping.
C.
They are takling a story.
D.
They go to the supermarket.
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【单选题】下列物质中与乙烯互为同系物的是 ( )
A.
CH3CH3
B.
CH2=CHCH(CH3)2
C.
C3H6
D.
C4H8
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【单选题】下列各组物质中，互为同系物的是
A.
丁烷与异丁烷
B.
葡萄糖与果糖
C.
乙烷与乙烯
D.
甲烷与丙烷
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【单选题】what are they doing ?
A.
They are taking photos.
B.
They are cutting or editing films.
查看完整题目与答案
【单选题】What are they doing?
A.
they are taking photos
B.
they are cutting or editing films
查看完整题目与答案
【单选题】下列各组物质中，互为同系物的是（　　）
A.
丁烷与异丁烷
B.
葡萄糖与果糖
C.
乙烷与乙烯
D.
甲烷和丙烷
查看完整题目与答案
【单选题】What are they doing?
A.
They are playing computer games
B.
They are playing Fun Facts
C.
they are watching TV
查看完整题目与答案
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【单选题】What are they doing ?
A.
They are taking photos.
B.
They are shooting films.
查看完整题目与答案
【单选题】下列各组物质中互为同系物的一组是
A.
C H 与C H
B.
CH =CH-CH 和CH =CH-CH -CH
C.
乙烯与聚乙烯
D.
与
查看完整题目与答案
【单选题】下列各组物质中，互为同系物的是 [     ]
A.
苯甲醇和苯酚
B.
丙烯和丙炔
C.
甲烷与2－甲基丙烷
D.
乙酸和乙酸乙酯
查看完整题目与答案
【单选题】What are they doing?
A.
They are travel.
B.
They are shopping.
C.
They are takling a story.
D.
They go to the supermarket.
查看完整题目与答案
【单选题】下列物质中与乙烯互为同系物的是 ( )
A.
CH3CH3
B.
CH2=CHCH(CH3)2
C.
C3H6
D.
C4H8
查看完整题目与答案
【单选题】下列各组物质中，互为同系物的是
A.
丁烷与异丁烷
B.
葡萄糖与果糖
C.
乙烷与乙烯
D.
甲烷与丙烷
查看完整题目与答案
【单选题】what are they doing ?
A.
They are taking photos.
B.
They are cutting or editing films.
查看完整题目与答案
【单选题】What are they doing?
A.
they are taking photos
B.
they are cutting or editing films
查看完整题目与答案
【单选题】下列各组物质中，互为同系物的是（　　）
A.
丁烷与异丁烷
B.
葡萄糖与果糖
C.
乙烷与乙烯
D.
甲烷和丙烷
查看完整题目与答案
【单选题】What are they doing?
A.
They are playing computer games
B.
They are playing Fun Facts
C.
they are watching TV
查看完整题目与答案
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