题目内容
词汇与结构Once installed, the equipment also has additional ____ requirements to ensure that it is fully capable of supporting reduced visibility operations.
查看答案
搜索结果不匹配？点我反馈
更多问题
词汇与结构In all cases, additional crew training is required for such approaches, and a certain number of low visibility approaches must either be performed or ____ in a set period of time for pilots to stay 'current' in performing them.
词汇与结构When using ILS, the ____ of the signal must be protected, which requires that certain areas of the airport close to the installations being free of other aircraft and vehicles.
词汇与结构There must be bigger gaps between aircraft on ____ approach to both protect the ILS signal and to cope with slower runway vacation times.
词汇与结构In addition, the airport itself has special considerations for low ____ operations.
微信支付 
支付宝支付