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。()

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。

问答题

碱式滴定管主要用于盛放碱性或具有氧化性的溶液。()

问答题

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。

问答题

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。()

问答题

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.

问答题

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?

问答题

Roman assemblies consisted of the whole Roman people.

问答题

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

问答题

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.