Since then, all modern jets and even some turboprops have come with their own APUs.

从那时起，所有现代喷气式飞机甚至一些涡轮螺旋桨飞机都配备了自己的 APU。

However, APUs aren't all good news.

然而，APU 也不全是好消息。

Indeed, some airports have restricted APU  usage at night to soothe local communities.

事实上，一些机场已限制 APU 在夜间使用，以安抚当地社区。

The APU was filled with water from natural and artificial reservoirs up to 3 meters deep.

APU 充满了来自深达 3 米的天然水库和人工水库的水。

From cabin lights to  avionics onboard, APUs have become essential for modern jets.

从机舱灯到机载航空电子设备，APU 已成为现代喷气式飞机必不可少的。

This means crews will generally  switch off the APU when taking off and reignite it while cruising for emergency  use.

这意味着机组人员通常会在起飞时关闭 APU，并在巡航时重新点燃以备紧急使用。

Unusually, the APU on the 727 was not in  the rear of the aircraft.

不同寻常的是，727 上的 APU 并不在飞机的后部。

Did you know about the  presence and role of the APU?

您知道 APU 的存在和作用吗？

APUs became common in the 1960s, with Boeing  including the first commercial APU for a jetliner in the 727 in 1963.

APU 在 1960 年代变得普遍，波音公司在 1963 年为 727 的喷气客机配备了首个商用 APU。

The best way to do this is to start  the APU (which is not normally running in flight).

最好的方法是启动 APU（它通常不会在飞行中运行）。