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[判断题]
按《B50086-2015岩土锚杆与喷射混凝土支护工程技术规范》规定,承载力设计值4500kN的基础预应力锚杆应进行验收试验并判定为质量合格后,方能开始张拉。()
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A.0.85
B.0.9
C.1
D.1.05
A.400mmx100mmx100mm
B.450mmx100mmx100mm
C.550mmx150mmx150mm
D.600mmx150mmx150mm
A.100mmx100mmx100mm
B.150mm∅150mm
C.200mmx200mmx200mm
D.150mmx150mmx150mm
E.100mm∅100mm
A.不大于12mm
B.不大于15mm
C.不大于20mm
D.D、不大于20mm
A.大于2.2
B.大于2.3
C.大于2.5
D.小于2.5
A.无碱
B.高碱
C.高氯
D.低碱
E.低氯