Warning: file_put_contents(/www/wwwroot/ppbbu/6s-iso.com/cache/a2662ec6ba56f8da69a92718dd2482ab.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/6s-iso.com/index.php on line 55 国产成人综合日韩精品无,欧美老妇作爱視频网站
The combination in fact is the point of tangency of the value cost equivalent curve and that of the value profit. 這一組合實(shí)際上就是等價(jià)值成本曲線和等價(jià)值收益曲線的相切點(diǎn)。