What are the tenet and objectives of APEC? What are the two whee

What are the tenet and objectives of APEC? What are the two wheels of APEC?
【正确答案】：The tenet and objectives of APEC are “inter-dependence, mutual benefits, adhering to an open and multilateral trading system and reduction of regional trade barriers”. The two wheels of APEC refer to trade and investment liberation and facilitation ( TILF)and economic and technical cooperation (ECOTECH).