单项选择题

在冬季流行的一种猪传染病,其特征是水样腹泻,病程一周左右,传播快,发病率高,死亡率低,这种传染病首先怀疑为（）。 A.
猪传染性胃肠炎 B.
猪流行性腹泻 C.
猪痢疾 D.
猪轮状病毒感染 E.
猪瘟

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A domestic appliance retailer maintains a central warehouse from which the outlets are supplied. The following information is available for part SF525.
Average sales                   75 per day
Maximum sales                  95 per day
Minimum sales                  50 per day
Lead time 12-18 day
Re-order quantity                  1,750

Based on the data above, at which level of stocks would a replenishment order be issued?

A．1,125 units
B．600 units
C．1,750 units
D．1,710 units