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问题 判断题

三元催化转换器在陶瓷载体的表面涂有铑、钯和铂元素，也称触媒。

答案

参考答案：对

选择题
— I'm sorry, but I don't quite follow you. Did you say you wanted to return on September 20?
— Sorry, I _____ myself clear. We want to return on October 20.

A. hadn't made
B. wouldn't make
C. don't make
D. haven't made
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单项选择题

对所有相对方要一视同仁，给所有利害关系人以同样的辩论机会，这体现了行政程序的（）原则。

A．鼓励双方参与

B．增进效率

C．程序公正

D．程序法定
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