皮皮学，免费搜题
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【单选题】
关于加氢处理催化剂的载体及其作用，下列叙述不正确的是：（）A.
提供适宜反应与扩散所需的结构
B.
担载分散金属均匀的有效表面积和一定的酸性
C.
可以改善催化剂的热稳定性
D.
加氢处理催化剂载体目前使用最广泛的是沸石分子筛
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皮皮学刷刷变学霸
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【简答题】The layer of air makes up about 75 percent of ______．
【判断题】About 75 percent of car parts in every Ford comes from recycled materials.
A.
正确
B.
错误
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