470、2 hours are necessary to do the procedure.

1018、The potable water system is used to store and deliver fresh drinking water 饮用水系统用于储存和输送新鲜饮用水

1017、The operational test for the HFS-900D transceivers is a BITE test which does a check of the internalfunctions of the HF transceiver. HFS-900D 收发器的操作测试是一个 BITE 测试，它对 HF 收发器的内部功能进行检查。

1016、 The navigation lights change from dim to bright.

1015、 The manufacturer may establish procedures to provide feedback on unairworthy conditions. 制造商可以建立程序，就不适航条件提供反馈。

1014、 the load is applied axially

1013、The information to be included on the cover will be left to the manufacturer＇s discretion.

1012、The gyroscope（陀螺仪） will become stable after approximately 15 seconds 陀螺仪将在大约 15 秒后变得稳定

1011、 The generators supply a three-phase voltage. The frequency of this voltage increases when thegenerator rotor speed increases.

1010、 The ‘gas charging valve is on the top of the shock strut of the nose landing gear

1009、The function and operation of each un it in the system should be described as well as the location ofthe units. 应描述系统中各单元的功能和操作，以及各单元的位置。