质谱法可以测定有机物的相对分子质量,而红外光谱和核磁共振氢谱可以确定有机物的官能团类型。()

问答题

潮湿的或具有腐蚀性的试剂必须放在玻璃容器里称量。

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碱式滴定管主要用于盛放碱性或具有氧化性的溶液。()

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实验室制氯气完毕,可以用饱和食盐水吸收氯气  ()

问答题

使用分液漏斗前必须检查分液漏斗是否漏液。()
A、正确
B、错误

问答题

质谱法可以测定有机物的相对分子质量,而红外光谱和核磁共振氢谱可以确定有机物的官能团类型。()

问答题

干燥箱和恒温箱的使用温度不能超过最高允许温度。

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本实验中,回流温度不宜太高,若温度太高,会促使副反应的发生,生成乙醚、乙烯等。()

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The Palatine Chapel was a masterpiece of architecture of the Carolingian Renaissance.

单选题

Solon established a council of _____ members drawn from all four classes and gave citizens the right of appeal.

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Henry Tudor, also called Henry VII, was the second king from the House of Tudor.

单选题

Who was the first emperor baptized and converted to Christianity?

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Roman assemblies consisted of the whole Roman people.

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The Storming of the Bastille marked the outbreak of the Revolution. Today the Bastille Day is the national day of France.

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There were three popular dramatic genres in Ancient Greece: Tragedy, comedy and satyr play.

单选题

In 1477 Burgundy was defeated by the Swiss army, the last duke was killed, then_____annexed most of the land of Burgundy.