()是对某一专题或某一论题具有独到学术观点的著作,它有学术论著、学位论著之 ["学术著作","学术论著","专题论著","论文著作"]
When performing an incomplete recovery of the whole database, what must be true about the data files that are restored?() ["A","B","C","D"]
以下哪个事件不是2009年发生的?() ["美国发射月球探测器","俄罗斯发射火星探测器","欧洲发射“赫歇尔”和“开普勒”空间望远镜","“广角红外探测者”空间卫星发射"]
ATS、APTS概念是什么?
当转向开关打到某一侧时,该侧转向灯亮而不闪,故障可能是() ["闪光继电器坏","该侧的灯泡环","转向开关有故障","该侧灯泡的搭铁不好"]
汽轮机在启动前为什么要暖管?