单项选择题
A.4,6B.6,8C.6,4D.8,6
A.25,50,膨胀锚栓B.30,50,膨胀锚栓C.25,50,打结锚栓D.30,50,打结锚栓
A.200B.300C.400D.500
A.50%,60%B.60%,70%C.60%,50%D.70%,60%
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