判断题
浸渍法制备负载型催化剂,前驱物的吸附能力强,则渗透率低,易呈蛋壳分布。
【参考答案】
正确
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单项选择题
It is on his sketches about his European tours that Washington Irving’s fame mainly rested.( )A.对B.错
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The sense relations between words can be analyzed in terms of truth conditions.
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