单项选择题
本节课识别的线缆都有哪些？A、超五类双绞线B、同轴电缆C、室内多模光缆D、室外单模光缆
单项选择题本节课识别的线缆都有哪些？
His mind would ______, and he would lose track of what ...
未知题型His mind would ______, and he would lose track of what he was doing.
管道穿墙、梁 、 板时,应预埋
未知题型管道穿墙、梁 、 板时,应预埋
