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【单选题】
加氢裂化过程也是在催化剂参与的条件下完成的,目前加氢裂化常用的催化剂主要是()。A.
分子筛催化剂
B.
金属加氢组分和酸性担体组成的双功能催化剂
C.
无定型催化剂
D.
碳基催化剂
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举一反三
【单选题】What is the main idea of this passage?
A.
A website narrows the gap between different cultures.
B.
A final barrier breaks down after continuous efforts.
C.
A man devotes himself to understanding among people.
D.
A book of tough questions helps confront stereotypes.
【简答题】A．The Philippines. B．Mexico. C．Brazil. D．Guatemala.
【单选题】Whats the main idea of this news item?
A.
Officials in the Philippines are incompetent at overcoming floods.
B.
Natural disasters hit the Philippines and caused casualties.
C.
Evacuation centers in the Philippines need to be improved.
D.
The northern Philippines have been pounded by heavy rain.
【单选题】What prevents Israeli and PLO negotiators from solving their problems?
A.
The fundamental differences between them.
B.
Their reluctance to compromise.
C.
Their desire to acquire more land.
D.
Their unwillingness to talk to each other.
【简答题】A．The Philippines. B．Brazil. C．Mexico. D．Guatemala.
【简答题】A．The Philippines. B．Brazil. C．Mexico. D．Guatemala.
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