航空器进近着陆应当经过机场塔台空中交通管制员许可

A、Anaircraftmayapproachtoland，onlyafteranclearancehasbeenobtainfromtheATCcontrollerofthecontroltower

B、Anaircraftmayapproachtoland，onlyafteraclearancehasbeenobtainedfromtheATCcontrollerofthecontroltower

C、Anaircraftmayapproachtolanding，onlyafteranclearancehasbeenobtainedfromtheATCcontrollerofthecontroltower

D、Anaircraftmayapproachtolanding，onlyafteraclearancehasbeenobtainfromtheATCcontrollerofthecontroltower

正确答案：B