离心泵中把从叶轮流出的液体导向下级叶轮或泵壳出口流道的部件是() ["A、泵体","B、导轮","C、叶轮","D、以上均错误"]
“公意”理论的倡导者是() ["卢梭","伏尔泰","狄德罗","爱尔维修"]
某种爆炸品,爆炸一经引发,瞬间即影响到全部货载,此类爆炸品属于《国际危规》的第()类。 ["A.1.1","B.1.2","C.1.3","D.1.4"]
提出“法律乃是人类理性的法则或内在的公正(即正义)”的思想家是() ["马基雅弗利","马西利","阿奎那","布丹"]
分析公共政策制定的科学依据
论述公共政策研究组织的体制