在饲料能量营养价值体系中,鸡的营养需要多采用()体系表示。
A.总能
B.消化能
C.代谢能
D.净能
参考答案:C
He to school, so he turned off the alarm clock and went back to sleep.
A.needn’t have gone
B.hasn’t needed to go
C.needn’t
D.didn’t need to go
下面说法正确的是
A.满足4范式不一定满足BC范式
B.满足BC范式一定满足4范式
C.满足4范式一定满足BC范式
D.BC范式与4范式没有任何关系