单项选择题
A.花岗岩B.瓷砖C.沥青类D.细石混凝土
A.300mmB.400mmC.500mmD.600mm
A.300mmB.250mmC.200mmD.150mm
A.膨胀锚栓B.自扩底锚栓C.模扩底锚栓D.双锁键锚栓
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