A. 要耐心倾听 B. 了解不满的原因 C. 提高口才 D. 只需认错
A. 甘遂 B. 芫花 C. 商陆 D. 大黄
A. /opt/package/scripts B. /opt/package/software/CTI C. /opt/package/software D. /opt/package/CTI