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问题
问答题 简答题
塔顶回流的作用?
答案
参考答案:
(1)提供每块塔板的液体回流,创造了汽液接触从而提供了传质的条件。
(2)取出进入塔内的热量,使精馏塔达到热的平衡。
阅读理解
No
Books
Authors(作者)
Price
1
Fruits and Our Health
P. H. Francis
$17.50
2
Successful planting in the garden
Mark Brown
$19.77
3
A handbook for Taiwan’s National Parks
Jackson Fisher
$32.00
4
Modern American History
Thomas Birdsall
$11.53
5
Taking care of your rabbit
Helen Piers
$5.39
小题1:Kelly wants to visit Taiwan next month. She needs to buy ________.
A.Fruits and Our Health
B.Successful planting in the garden
C.A handbook for Taiwan’s National Parks
D.Modern American History
小题2:How much is Taking care of your rabbit?
A.$19.77.
B.$17.50.
C.$11.53.
D.$5.39.
小题3:Who is the author of Modern American History?
A.Thomas Birdsall.
B.Mark Brown.
C.P. H. Francis.
D.Helen Piers.
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填空题
纯棉妇女用针织紧身胸衣
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