合同生效
参考答案:
是指已经成立的合同在当事人之间产生了一定的法律约束力。
—Are these CDs ________?
—No, they are not mine. They belong to _______.[ ]
A. your; her
B. yours; her
C. you; hers
D. yours; she
330MW机组的励磁为无刷励磁。()