MCS-51单片机串行口工作于方式1时为（）。 ["A.移位寄存器","B.10位异步收发器","C.11位异步收发器","D.主要用于扩展并行输入或输出口"]
电梯运行情况巡查的重点是哪些？
妇女广泛参与（）的管理，享有充分的民主和自由，是社会文明进步的标志，反映妇女参与社会发展的程度？ ["宏观经济","国家和社会事务","基层工作"]
A cabinet or space containing the controls or valves for the fixed firefighting system must be（）. ["posted with instructions on the operation of the system","ventilated and equipped with explosion-proof switches","painted with red and black diagonal stripes","equipped with a battery powered source of emergency lighting"]
电梯技工的工作内容包括什么？
以抵押、质押或保证担保方式中一种或多种组合申请授信的称为（）。
