A.根部病害
B.灰霉病
C.白粉病
D.立枯病
A.3
B.4
C.5
D.1
A.3
B.4
C.5
D.1
A.观察物料在输送网板上的状态是否与喂料状态一致。
B.使一、二区和三、四区的空间分开,不使两进风方式的气流相互影响。
C.观察一、二区的干燥效果
D.A、B、C都是
的需求和边际收益为:
垄断者的总成本为C=5+3(Q1+Q2)。问在以下两种情况下价格、产量、利润、边际收益和无谓损失各为多少? (1)如果垄断者可以采取价格歧视; (2)如果法律禁止在两个地区索要不同的价格。
A monopolist is deciding how 10 allocate output between two markets. The two markets are separated geographically (East Coast and Midwest). Demand and marginal revenue for the two markets are:
The monopolist ' s total cost is C=5+3(Q1+Q2). What are price, output, profits, marina revenues , and deadweight loss (I) if the monopolist can price discriminate? (2) if the law prohibits charging different prices in the two regions?
不属于蔓状血管瘤临床表现的是
A.体位移动试验阳性
B.表面皮温高
C.扪诊有震颤感
D.听诊有吹风样杂音
E.肿瘤高起呈念珠状