栾树的花相为（）A.团簇花相 B.星散花相 C.独生花相 D.覆被花相_爱下问搜题

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问题单项选择题

栾树的花相为（）

A.团簇花相

B.星散花相

C.独生花相

D.覆被花相

答案

参考答案：D

选择题

Part of the reason Charles Dickens loved his own novel, David Copperfield, was _____ it was rather closely modeled on his own life.

A. what
B. that
C. why
D. whether

问答题简答题

简述塑性成形中对润滑剂的要求。