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【单选题】
下列对乙醚蒸馏操作中正确的加热方式是()A.
用煤气灯直接加热支管烧瓶
B.
用2kW电炉直接加热支管烧瓶
C.
用水浴间接加热支管烧瓶
D.
用电热板间接加热支管烧瓶
拍照语音搜题，微信中搜索"皮皮学"使用
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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】The invention of helped forge the great industrial revolution of the 19th Century.
A.
steam locomotives
B.
diesel locomotives
C.
electric locomotives
【单选题】In the early of 19th Century, Britain was the "____________" as the result of the Industrial Revolution
A.
Workshop of the World
B.
Financial Center of the World
C.
Economical Engine of the World
【简答题】完成第31课课后题,拍照上传。
【单选题】In the early of 19th Century, Britain was the "____________" as the result of the Industrial Revolution
A.
Workshop of the World
B.
Factory of the World
C.
Economical Engine of the World
【判断题】The Industrial Revolution was accomplished in Britain by the middle of the 19th.
A.
正确
B.
错误
【简答题】世界上第一台电子计算机是1946年在美国诞生的,该机的英文缩写是
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