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【多选题】
下列关于分散染料的染色机理 ,说法正确的是:A.
分散染料不溶于水，染色时它们是以微小颗粒状态上染到纤维上去的；
B.
分散染料的水溶性很小，在染液中它们是通过溶解成分子以分散状态上染到纤维上去的；
C.
染色时随着染液中染料分子不断上染纤维，染液中的染料不断溶解，分散剂胶束中的染料会不断释放出染料单分子；
D.
在染色过程中，染料的溶解、吸附上染和扩散处于动态平衡之中。
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【单选题】If the president wants to put a treaty into effect, he has to get the approval by two thirds of the _____.
A.
Senate
B.
Cabinet
C.
Congress
D.
The Supreme Court
【单选题】4) The president wants to see their national flag _______ on the surface of Mars by 2019.
A.
to fly
B.
flying
C.
flew
D.
flown
【单选题】The president wants to see their national flag ______ on the surface of Mars by 2019.
A.
to fly
B.
flying
C.
flew
D.
flown
【单选题】The president wants to improve the nation's highways and mass ____________ systems.
A.
transit
B.
operation
C.
transition
D.
transmission
【判断题】If the president wants to put a treaty into effect, he has to get the approval by two thirds of the senate.
A.
正确
B.
错误
【简答题】诗人冯至借助 “蛇”这个意象,抒发了怎样的感受和渴望?
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