【单选题】Cox Radio, one of the nation's largest radio chains, plans to ______ its ties with independent record promoters to distance itself from a payola-like practice that runs rampant in the music business.
【单选题】Parents shouldn’t be too ______________ towards their children; they should let them be more independent.
【单选题】对于加强绝缘的电气设备,带电部件与可触及导体间的绝缘电阻不应低于()MΩ。
【单选题】对于加强绝缘的电气设备,带电部件与可触及导体间的绝缘电阻不应低于()MΩ。
【单选题】78% of group tour travellers and 51% of (5) travellers were from countries
【单选题】对于加强绝缘的电气设备,带电部件与可触及导体间的绝缘电阻不应低于多少兆欧
【单选题】对于加强绝缘的电气设备,带电部件与可触及导体间的绝缘电阻不应低于 ( )MΩ。
【单选题】对于加强绝缘的电气设备,带电部件与可触及导体间的绝缘电阻不应低于( )。