施工生产安全事故发生之日起（）内伤亡人数发生变化的应当及时补报。 ["A.30日 ","B.60日 ","C.90日 ","D.15日"]
Which of the following trunking modes are unable to request their ports to convert their links into trunk links？ （） [" Negotiate"," Designate"," No negotiate"," Auto"," Manual"," Off"]
北部湾经济区要大力发展核能，有序发展生物质能、风能和（）等清洁能源，加快建设防城港核电基地和沿海风能项目。 ["地热能","氢能","太阳能","海洋能"]
教学设计的基本程序。
以下放大倍数中CorelDRAW不能达到的是（） ["400％","400000％","4000000％"]
备份数据库
