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【多选题】
热重法可精确测定物质质量的变化,对高分子材料的组成进行定量分析。热重法大致可用于以下几个方面:(1)();(2)();(3)();(4)();(5)升华和蒸发速率;(6)氧化还原反应 高聚物的热氧化降解;(7)反应动力学研究。
A.
物质的成分分析;
B.
物质的热分解过程和热解机理
C.
在不同气氛下物质的热性质;
D.
水分和挥发物的分析
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举一反三
【简答题】The room was filled with smoke, so it was becoming difficult to . (breath)
【单选题】The hallway is filled with smoke.
A.
you look for the fire extinguisher
B.
you stand up and run.
C.
you stay near the ground and crawl to the exit.
【单选题】听力原文:M: The mom is filled with smoke. I can hardly breathe. W: I agree. Smoking should not be permitted in this mom at all. Q: What can we learn from this dialogue? (5)
A.
The room is on fire.
B.
The man is bothered by the smoke.
C.
There is little air.
D.
The man is not permitted in the room.
【简答题】" He went back upstairs, the whole area now filled with smoke and burning jet fuel .” (Para. 8) What is the function of the underlined part? Is it a sentence? Can you find the same struc...
【判断题】《周庄》是吴冠中创作生涯的压卷之作,长度近3米,是目前出现于市场上其尺幅最大的油彩作品。
A.
正确
B.
错误
【单选题】The smoke filled the room and almost ( ) the firemen
A.
extoled
B.
stifled
C.
worshipped
D.
cult
【单选题】When the fire broke out, he _____________ blindly on through the smoke-filled building.
A.
collapsed
B.
twisted
C.
stumbled
D.
saddened
【判断题】旅客在到站开车后要求继续旅行时,应按越站办理。(部竞赛题)
A.
正确
B.
错误
【简答题】句型转换。 1 The kitchen was filled with smoke. (同义句) The kitchen _______ _______ _______ smoke. 2. Jack's summer holiday was great . (对划线部分提问) _______ _______ Jack's summer holiday? 3. My' parents will go...
【判断题】旅客在到站开车后要求继续旅行时,应按越站办理。()
A.
正确
B.
错误
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