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【单选题】
萃取操作是 相间的传质过程。A.
气-液
B.
气-固
C.
液-液
D.
液-固
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举一反三
【单选题】Which of the following is true when the blind man asked the author about the cathedral?
A.
The narrator described it without difficulty.
B.
The narrator translated the TV news to the blind man.
C.
The narrator has a hard time describing a cathedral.
D.
The narrator turns the TV off.
【简答题】The blind men sat besides the roadside, begging all the time . A B C D
【单选题】Which of the following best describes the married life between the blind man and Beulah?
A.
The marriage was not approved by Beulah ' s family.
B.
She left some Mexican money to the blind man.
C.
They didn 蒺 t have a sex life.
D.
All of the above.
E.
A and B only.
【单选题】Which of the following is NOT true about the ultrasonic torch?
A.
It enables the blind to live a more normal life.
B.
It is mainly used to scan the area in front of the operator for obstacles.
C.
Fast succession of bleeps indicates that the obstacle is near.
D.
Its sound can warn other people of the blind man’s approach.
【简答题】Which of the following is true when the blind man asked the author to draw a cathedral?A. The blind man's hand was following the narrator's hand in drawing. B. The blind man asked the narrator to hold...
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