学在官府
参考答案:
又称学术官守,是夏、商和西周时期教育管理体制的共同特点。即学术被官方所垄断,民间五学。学在官府主要表现为官师不分、教育机构与行政机构不分。
It is said that sixty percent of all energy ________ in the world today is being lost as wasted heat.
A.produced
B.producing
C.to produce
D.having produced
简述国民经济评价中费用与效益计算的原则。