脂肪组织属于哪种组织（）
A.上皮组织
B.结缔组织
C.肌肉组织
D.神经组织
参考答案：B
按股东享有的权利不同，股票可分为（）。
A.普通股票
B.优先股票
C.记名股票
D.不记名股票
With respect to regulating a natural monopoly, which of the following pricing rules to regulate the natural monopoly firm will most likely require the government to provide a subsidy sufficient to compensate the firm in order to avoid the firm to leave the market（）
A. Average cost pricing.
B. Marginal cost pricing.
C. Profit maximizing pricing.
