Research on information preference from the perspective of matching 并列题名:Research on information preference from the perspective of matching Research on international currency from the perspective of safe assets Research on rural information service from the perspective of social network 并列题名:Research on international currency from the perspective of safe assets Research on information regulation tools from the perspective of administrative law Research on pedagogical expertise from the perspective of teachers Research on international law from the perspective of national laws Research on the essence of information warfare from the perspective of philosophy Research on intellectual property culture from the perspective of innovation ecosystem