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【单选题】
做油型乳化剂最合适的HLB值为( )A.
12~18
B.
8~16
C.
15~19
D.
13~16
E.
3~8
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【简答题】Do you know how to play a called Musical Chairs"? It is easy to play and most people enjoy it. All you need are some chairs, some people and some ways of music. You may use a piano or any ...
【简答题】Do you know how to play a called Musical Chairs? It is easy to play and most people enjoy it. All you need are some chairs, some people and some way of music. You many use a piano or any o...
【简答题】背景
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【单选题】2) what is opposite to labor according to paragraph two in Text A ?
A.
work
B.
career
C.
play
D.
game
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