【单选题】分离沸点不同的液体混合物的方法是( )。
【简答题】ad.而且;再者;此外A. moreover
【简答题】蒸馏是提纯或分离沸点不同的液体混合物的方法。蒸馏时要注意哪些操作事项:
【单选题】听力原文: Jane Brown has been married for 12 years. She has three children and lives in a suburb outside Columbus, Ohio. When her youngest child reached school age, Jane decided to go back to work. She fe...
A.
Because she was bored with her idle life at home.
B.
Because she was offered a good job by her neighbour.
C.
Because she wanted to help with the family's finances.
D.
Because her family would like to see her more involved in social life.
【单选题】听力原文: Jane Brown, has been married for 12 years, she has three children and lives in a suburb outside Columbus, Ohio. When her youngest child reached school age, Jane decided to go back to work. She f...
A.
Because she was bored with her husband.
B.
Because she would like to help with the family's finances.
C.
Because she was offered a good job.
D.
Because she was bored with her children.