aSupercritical carbon dioxide (SC-CO2) was employed to extract oil from hemp (Cannabis sativa L.) seeds.For ground seeds, the supercritical extraction was carried out at temperatures of 40, 60 and 80 ◦C and pressures of 300 and 400 bar. Different solvent-ratios were applied. Supercritical...
任何社会政策的推动，都是循序渐进的过程，不可能[u] [/u]。同时，社会政策的推进力度是政府需要反复[u] [/u]的问题，力度太小，改革进程缓慢，改革成果不能早日惠及全体人民，影响政策时效性；力度太大，人民群众接受不了，同样容易出现问题。 依次填入画横线部分最恰当的一项是：