柏拉图在四元素说上发展处五种正多面体的理论。
参考答案：对
He always thinks more ______ than of______, 80 we really like him. [ ]
A. him; other
B. himself; the other
C. others; himself
D. the other; himself
什么是管子和管路附件的公称直径？用什么符号表示？列出150mm以下常用的公称直径？
