My father has a small _________ collection.[ ]
A. sport
B. sport's
C. sports'
D. sports
答案:D
货币供给与贴现贷款水平负相关。
计算题:某高炉某次出铁120吨,两次出铁间的下料批数为16批,每批料的理论出铁量为7吨,计算此次铁的铁量差并判断是多出铁或是少出铁?