单项选择题
A cabinet or space containing the controls or valves for the fixed firefighting system must be（）.
A.posted with instructions on the operation of the system B.ventilated and equipped with explosion-proof switches C.painted with red and black diagonal stripes D.equipped with a battery powered source of emergency lighting
问答题 电梯技工的工作内容包括什么？
单项选择题 不能安装活动目录的操作系统有（）。
填空题 借款人若需以华夏银行整存整取储蓄存单办理动态质押的，须将相应定期存款帐户移入（），方可实现额度的动态使用。
