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Diversity means _______.

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The UN stresses good _______________ anditsimportance in peacekeeping because it underpins other competencies.

1.The 8 UN Core Competenciesare communication, ___,Planning and organization, accountability, _, ____, commitment to continuous learningand technological awareness.

简述空场采矿法的特点有哪些？

空场采矿法属于二步骤回采的采矿方法

A. 对
B. 错