115.Calculate the number of shims that are necessary( )

821.English is not often the native language of the readers of technical documentation ( )

820.Equipment without significant effect on the weight or balance of the airplane need not be listed( )

819.手册应易于修订,它们可以是活页形式,带有耐用的多环形封面或者永久性装订 ( )

818.大气压力随海拔的升高而降低。( )

817.De-energize the system ( )

816.给定襟翼设置时,不要超过此速度 ( )

815.The operational test for the HFS-900D transceivers is a BITE test which does a check of the internal functions of the HF transceiver( )

814.Identify sections that can cause specific types of trouble( )

813.将拆下的紧固件报废 ( )

812.Fire seals are those fire-resistant partitions and seals mounted on or about the power package for the purpose of isolating areas subject to fire ( )