构成燃油系统的组件有位于右翼前缘襟翼外侧的加油口， 3个浮子开关 -每油箱一个，用来防止油箱过满。浮子开关位于油箱顶部测量油量。油箱油量可按要求存贮，浮子开关测量油量并能自动停止加油。电源可由地面电源、 APU或电瓶提供。压力加油也可人工操作。最大燃油压力为 55psi。

(5) The distribution system allows fuel to be supplied to the engines and APU. In addition, the system can be used for defueling the tanks and for fuel transfer between the tanks. The distribution system utilizes pumps, valves and truing for engine and APU feed. The fueling station is used for defueling and transfer operations which are only possible on the ground.

燃油分配系统可为发动机及 APU供油。另外，分配系统可用于油
箱放油及油箱之间的输油。分配系统利用泵、阀门及涡轮为发动机及 APU供油。加油口只能在地面进行放油及输油操作。
(6) Fuel is first supplied to both engines from the center tank and then from the respective tanks to engines. The crossfeed valve allows fuel from one tank to be supplied to both engine. Fuel to the APU is primarily supplied from tank No.1, but it can be supplied from any tank.

燃油 is first supplied to both engines from the center tank and then from the respective tanks to engines.交输活门允许燃油从一个油箱同时给两台发动机供油。为 APU供油主要是用 1号油箱，但也可从任一油箱供油。

(7) The fuel quantity indicating units measure the weight of usable fuel in the tanks. Two types of quantity indicators are used, one is capacitance indication, another one is a manual measuring stick.

油量指示组件测量油箱中油的重量。一般使用两种油量指示，一个是容量指示，一种是人工用棒测量。

(8) Digital fuel quantity indicators show the weight of fuel ing each tank. Each indicator consists of a single chip microcomputer system and a digital liquid crystal display(LCD). The microcomputer measures the capacitance and resistive current in the tank units. It monitors the leakage current and when is reaches an unacceptable level, an drror code o through 10 illuminates to assist in troubleshooting the system.

数字油量指示器显示每个油箱中的油量。每个指示器包括一个单芯片微型计算机系统和一个数字式液晶显示器。微型电子计算机测量油箱中的容量和电阻电流。它监控着泄漏电流，当泄漏达到一定程度时，会指示一个 0到 10的代码，以帮助进行系统排故。

(9) The measuring sticks are graduated tape which can be pulled down for reading of fuel height.

测量棒是一个刻度尺，它能够放进油箱来读出燃油深度。
LESSON 13 HYDRAULIC POWER
一、单词
液压的  Hydraulic 动力，电源  Powr 反推装置  Reverser
共享  Share 责任、负责 液压传动的  Dydrallically
有要求的  On demond 起落架  Landing gear 前轮转弯  Nose wheel steering
副翼  aileron 动力控制组件  Power control unit 升降舵  Elevator
方向舵  Rudder 飞行扰流板  Flight spoiler 刹车  Brake
动力转换装置  Driven transfer unit 发动机传动泵  Engine driven pump 电动马达传动泵  Electric motor driven pump
关闭  Shutoff 截流阀  Shutoff valve 油箱  Reservoir