印度水旱灾害频繁的原因是[ ]

A．印度全年高温多雨，年降水量超过2000毫米

B．西南季风强弱不同，年降水量不稳定

C．高原面积广大，排水系统不畅

D．每逢夏季，印度河水量暴涨，下游水患多

Quality control involves monitoring specific project results to determine if they comply with relevant quality standards. To evaluate quality control outputs, the project team should definitely have a working knowledge of ______ .

A．prevention and inspection

B．sampling and probability

C．special causes and random causes

D．tolerances and control limits