题目内容

Each person at the reunion was required to talk to other relatives to find out if they would buy one of the histories()it were printed.

A. whether
B. if
C. when
D. after

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计量经济学方法不是计划工作方法。

A. 正确
B. 错误

大数原则

钢琴属于下列哪种乐器()

A. 拨弦乐器
B. 弓弦乐器
C. 击弦乐器
D. 键盘击奏弦鸣乐器

简述外资企业的主要特征。

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