下述哪种是β1受体的主要效应（） ["舒张支气管平滑肌","加强心肌收缩","骨骼肌收缩","胃肠平滑肌收缩","腺体分泌"]
Which of the following statement is incorrect regarding RMAN？（） ["It detects corrupt blocks.","It performs only offline database backups.","It omits empty blocks during backups.","It performs tablespace point-in-time recovery （TSPITR）."]
起动机的定子俗称磁极，作用是（）。
What happens if all CTI ports for the configured CTI Port Group are busy when a new call arrives?（） ["Caller will receive network busy treatment. ","Caller will receive ringing treatment. ","CallManager will forward the call to the directory number configured for forward-on busy for this CTI Route Point in CallManager. ","An exception is raised, but the call is accepted and processed. ","CallManager will forward the caller to the directory number configured in IPCC Express for overflow"]
为了防止危险的接触电压，把所有容易同时接近的裸露导体互相连接起来，这属于采用（）保护措施。 ["等电位环境","接零保护","不导电环境","接地保护"]
什么是面向过程式语言？有什么特点？
