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【判断题】
硬脂酸镁属于水溶性润滑剂A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】According to the passage, which of the following statements is true?
A.
The Doha meeting did enough to control emissions.
B.
The climate summit in Durban in 2011 made a commitment to reach a new agreement "with legal force" by 2015.
C.
The Doha meeting put many countries on a wrong track.
【单选题】Who comprise the majority in a society according to the author?
A.
workers .
B.
Labor s.
C.
Players .
D.
Not mentioned .
【单选题】According to the passage, the Nazca lines were found ________
A.
in mountains .
B.
in stones.
C.
on animals.
D.
on a plain.
【单选题】分类是学习和研究化学物质及其变化的一种常用的基本方法。家庭常用的调味品、人的正常生理活动所必不可少的氯化钠，它与下列哪组属于同一类物质 [ ]
A.
氢氧化铝、氢氧化钠
B.
盐酸、硫酸
C.
二氧化硫、二氧化碳
D.
碳酸钠、硫酸铜
【单选题】According Cerf, the purpose to design interplanetary Internet is to ___
A.
send real-time science data
B.
communicate with astronauts
C.
lay foundation for future technological advances
D.
commercialize it
【简答题】请翻译:The amount that the mixture is compressed is determined by the compression ratio of the engine.
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