【单选题】从一定的土壤上所得到的报酬随着向该土地投入的劳动资本量的增大而有所增加,但报酬的增加却在逐渐减小,亦即最初的劳力的投资所得到的报酬最高,以后递增的单位投资和劳力所得到的报酬是渐次递减的。这一规律被称为()
【单选题】I was ______ in my reading, and didn't at first hear the doorbell ting.
【单选题】在下列各项财务报表中,属于反映企业经营成果的对外报表是( )。
【简答题】It is not necessary to state whether freight has been paid or is paid at destination.( )
【单选题】I was ______ in my reading, and didn't at first hear the doorbell ring.