已知C10的混凝土强度值有以下4个,其中______为抗拉设计强度。
A.10N/mm2
B.5N/mm2
C.5.5N/mm2
D.0.65N/mm2
参考答案:D
患者,女,65岁。经常目暗昏花,并伴有腰酸,耳鸣,舌淡,脉沉。处方中使用了‘‘相使”配伍原则,首选药组是()
A.决明子、桑叶
B.枸杞子、山萸肉
C.墨旱莲、女贞子
D.黄芪、茯苓
E.菊花、枸杞子
Many useful tools and techniques are used in developing schedule. ______ is a schedule network analysis technique that modifies the project schedule to account for limited resource.
A.PERT
B.Resource levelling
C.Schedule compression
D.Critical chain method