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【简答题】
分馏塔顶温度是根据粗汽油干点来控制的，一般控制在（）度，不能太低，应保证分馏塔内（）以气态的形式由塔顶馏出。
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【单选题】Beijing is well ______ its beautiful scenery and the Great Wall.
A.
known as
B.
known to
C.
known about
D.
known for
【单选题】Transfer payments are payments by ( ).
A.
gold
B.
cash
C.
silver
D.
financial instruments
【单选题】Mary is an American schoolgirl. She is now in Beijing with her parents. Mary doesn't know Chinese, but she is trying to learn and speak it. She often tries to speak Chinese to her Chinese friends. Som...
A.
English
B.
American
C.
Chinese
【简答题】Mary is an American girl. She is now in Beijing with her parent. Mary doesn’t know much Chinese, but she is studying it . She often speaks Chinese with her Chinese friends. Sometimes they can’t unders...
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【简答题】阅读理解。 Mary is an American schoolgirl. She is now in Beijing with her parents. Mary doesn't know Chinese. But she is trying to learn and speak it.She often tries to speak Chinese to Chinese very well. ...
【简答题】Mary is an American girl. She is now in Beijing with her parents. Mary doesn’t know much Chinese, but she is studying it. She often speaks Chinese with her Chinese friends. Sometimes they can’t unders...
【简答题】Mary is an American schoolgirl. She is now in Beijing with her parents. She doesn't know Chinese, but she is trying to study and speak it. She often tries to speak Chinese to her Chinese friends. Some...
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