电气设备过热主要是由电压产生的热量造成的
错误
暂无解析
DES加密算法所采用的密钥的有效长度为()
设A矩阵,B矩阵则AB=___
—Youlookverypale.You__________verytired.—Ididn’tsleepatalllastnight.
Thereareoversix________students_____partintheentranceexaminDongchengonMaythesecond.
Theschool_________wemetafamousscientistisnotbig.