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【单选题】
下列关于浓硫酸的叙述中,不正确的是( )。A.
是难挥发的黏稠液体,溶于放出大量的热
B.
有脱水性,滴在木条上使木条发黑
C.
有酸性,常温下可溶解铁、铝等金属
D.
有强氧化性,加热时与木炭反应
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举一反三
【单选题】Witmer's research leads people to believe ______.
A.
Tyrannosaurus Re had lips and Triceratops had cheeks
B.
dinosaurs might have looked like mammals such as sheep
C.
dinosaurs might not have looked like what we thought
D.
dinosaurs must have looked like birds or crocodiles
【单选题】预真空压力蒸汽灭菌器的压力及温度分别是
A.
103kPa，12l℃
B.
103kPa，126℃
C.
137kPa，128℃
D.
137kPa，130℃
E.
205kPa，132℃
【简答题】阅读理解。 Head of Research Salary:￡55.271 We are looking for a Head of Research to manage the CWU Research Department and Information Centre. You would be required to exercise control of all research work...
【单选题】预真空压力蒸汽灭菌器的压力及温度分别是
A.
103kpa，121℃
B.
103kpa,126℃
C.
137kpa，128℃
D.
137kpa,130℃
E.
205kpa，132℃
【单选题】Why does the author say that the important part of this research began when two Harvard researchers were brought in?
A.
Until then the research had been poorly conducted.
B.
They took a multifaceted approach.
C.
The results of the original research did not make sense.
D.
Harvard had a good reputation in conducting research.
【单选题】预真空压力蒸汽灭菌器的压力及温度分别是
A.
103kPa,121℃
B.
103kPa,126℃
C.
137kPa,128℃
D.
137kPa,130℃
E.
250kPa,132℃
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