霍乱的特点是（）
A.是一种急性发热性感染性疾病
B.不伴腹痛的水样腹泻
C.大便量大
D.里急后重
E.呕吐，黏液血便，明显脱水
参考答案：B, C
Software configuration management (SCM) is the task of tracking and controlling changes in the software.Configuration management practices include configuration identification,change control,（）and configuration audit.
A.milestones marking
B.status reporting
C.stakeholder management
D.quality audit
4710.6710高压皮带规格是（），设计能力（）。
