单项选择题If the imposition of tariff on a commodity alters the relative prices of the imposing country’s exports to its imports, it is referred to as the A. total price effect of the tariff B. production effect of the tariff C. consumption effect of the tariff D. terms-of-trade effect of the tariff
单项选择题若某站地面层的气压为846.1,则该站除地面外探测到的第一个等压面是()。 A. 925hpa B. 850hpa C. 700hpa