Monthly demand for gasoline at a particular location, as a function of the price of gasoline and the price of bus travel, is given (in hundreds of gallons) as QD = 300 - 15 Pgas + 2 Pbus" The slope of the demand curve for gasoline is closest to:

[单选题]The market demand function for item X is a function of its price, household

[单选题]The monthly demand curve for playing tennis at a particular club is given b

[单选题]A diesel engine is similar to a gasoline engine except that the former has no （）.A . cross-headB . cylinderC . connecting rodD . spark plug

[单选题]A diesel engine burns （） a gasoline engine of the same capacity in the same period of time.A . as much fuel asB . less fuel thanC . less fuel asD . more fuel tha

[单选题]Before starting any diesel or gasoline engine，which of the following must be checked? （）A . Oil levelB . Flow of cooling waterC . Exhaust dischargeD . All of the above

[主观题]需求的价格弹性（Price elasticity of demand）

[名词解释] 需求的价格弹性（Price elasticity of demand）

[试题]Price－elasticity of demand 需求的价格弹性

[名词解释] Price－elasticity of demand 需求的价格弹性

[单选题]The demand function for coffee pots is given by 250-5P, and the supply func