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非正式的社会福利系统又称为()
管式炉的作用是什么?
关于分娩的说法正确的是()。
计划工作的首要程序是( )。
中国人的饮食习俗的一大特点是使用筷子。我国使用筷子的历史可追溯到商代。秦汉时期筷子称之为()。
下列对应急预案处置要求描述正确的是()。
法律是硬要求,具有强制性和权威性;道德是软约束,具有()。 ①感召力 ②扩散力 ③约束力 ④引导力
可用于热结便秘的药物是()
下列物理量的估测中,最接近实际的是( ).
日本帝国主义侵华战争失败后,于()宣布无条件投降。
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