保利点
参考答案:
指在单价和成本水平确定的情况下,为确保预先确定的目标利润能够实现,而应达到的销售量和销售额的统称。
磷酸果糖激酶的最强变构激活是()
A.AMP
B.ADP
C.ATP
D.2,6-二磷酸果糖
E.1,6-二磷酸果糖
The factory, including its machines and buildings, ______ burnt to ashes during the fire.
A.is
B.are
C.was
D.were