燃料燃烧实际释放出的总热量与燃料所能释放的总热量之比称为（）。
A.循环热效率
B.空燃比
C.燃烧效率
D.比热
参考答案：C
---Does anyone know __________?
---I hear that he was born in Sweden.
A．what he is
B．when he was born
C．where he comes from
D．which country is he from
信用社公积金按法定程序转增形成的资本金是[ ]
A．实收资本 B．资本公积C．盈余公积 D．未分配利润
