销售品种构成变动之所以影响产品销售利润,是因为()。
A.各产品单位利润不同
B.各产品销售价格不同
C.各产品单位成本不同
D.各产品利润率不同
参考答案:D
表实兼内热证出现身重,是由于:()
A.感冒较重,邪正相争较急
B.气血虚衰
C.寒郁气滞
D.热甚伤气
E.气血受阻
he is well again, he can go on with his English study. [ ]
A. Now that
B. In case
C. So long as
D. As far as