根据《统计法》规定,乡、镇人民政府设置()。
A.专职或兼职统计员
B.独立的统计机构
C.专职统计员
D.兼职统计员
参考答案:A
柴胡加龙骨牡蛎汤适用于()
A.气血损伤惊悸证
B.心阳虚烦证
C.心阳虚惊狂证
D.邪气弥漫烦惊谵语证
Under perfect competition, a firm will experience zero long term economic profit when:()
A. price is less than average total cost.
B. MR is greater than ATC.
C. MC = ATC = MR = price.