【单选题】金属板屋面长向搭接的接缝处应填嵌防水密封材料,其挑出檐口长度应不小于( )。
【简答题】Beer and pizza are complements because they are often enjoyed together. When the price of beer rises, what happens to the supply, demand, quantity supplied, quantity demanded, and the price in the mar...
【简答题】jump 作用于皮肤粘膜及创伤防腐消毒药有________、________。
【简答题】已知地层中某一单元土体,σ1=200kPa,σ3=120kPa,则该点的剪应力最大值τmax= kPa ,该剪应力最大值所在的面与水平面(最大主应力作用面)呈 °。
【单选题】Andy views beer and pizza as complements to one another. If the price of pizza decreases, economists would expect:
A.
Andy's demand for pizza to increase.
B.
Andy's demand for pizza to decrease.
C.
Andy's quantity of pizza demanded to decrease.
D.
Andy's demand for beer to increase.
【简答题】目前已确定16种元素为植物生长发育所必须,称为()。
【单选题】Pizza and beer are complementary goods for consumers in a local market. The beer industry, which has constant marginal cost, is perfectly competitive and is now in long run equilibrium. If the market ...
A.
The market price of beer falls and each firm produces less beer.
B.
The market price of beer does not change, but the quantity increases because new firms enter the beer industry.
C.
The market price of beer does not change, but the quantity decreases because some firms exit the industry
D.
The market price of beer rises and each firm produces more beer
【判断题】用2~3种单一基质混配形成的穴盘育苗用的基质属于复合基质。