问答题

Suppose one could either rent a car or take a train to travel to Chicago from Washington, D.C. If the price of train tickets increases:

答案： A.the demand for rental cars will decrease.
B.the demand...

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单项选择题

建设工程项目材料管理中，材料占用资金较多，要严格控制订货量，力争减少库存实行重点管理的是
A、A类材料
B、B类材料
C、C类材料
D、以上都是

Suppose the price of gasoline increases and that sport utility vehicles get poor gas mileage compared to other available cars. One would expect:

答案： A.the demand for gasoline to decrease.
B.the demand for ...