从公元前6世纪到公元前1世纪，世界科学技术最辉煌的国家是古埃及。()

Judge the similar meaning of the couple sentences.When exploring your career options, talk to as many people as you can.Have a discussion with more people around you before making your career option. 点击查看答案

高压系统(4MPa)堵漏时，应采用高压注射枪，用油泵升压，使油压小于介质压力。( ) 点击查看答案