单项选择题
用人单位对于首次取得资格证书的人员，应当在其正式上岗前安排不少于（）A.1个月B.2个月C.3个月D.半年
单项选择题用人单位对于首次取得资格证书的人员，应当在其正式上岗前安排不少于（）
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.
