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【单选题】
联合国《儿童权利公约》规定,对儿童的养育与发展负有首要责任的是( )A.
联合国儿童权利委员会
B.
父母或法定监护人
C.
国家
D.
幼儿园
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【简答题】塑性铰的转动限度，主要取决于 、 和 。
【单选题】Which conditions are mentioned in Article 4(A)(2) and Article 4(A)(3) of Geneva Convention III about Taliban Soldiers? (multiple choice) ( )
A.
that of being commanded by a person responsible for his subordinates;
B.
that of having a fixed distinctive sign recognizable at a distance;
C.
that of carrying arms openly;
D.
that of conducting their operations in accordance with the laws and customs of war.
【简答题】What is the difference between sampling theorem, Nyquist theorem, and Shannon theorem?