保险合同成立必须经过的环节是( )
A.要约与承诺
B.承诺与转让
C.转让与解除
D.解除与终止
参考答案:A
— Would you mind turning your music down, please?
— . [ ]
A. No, of course not
B. That right
C. Thank you very much
电压无功自动控制的模式。