英闻天天译： 油箱警示灯要注意

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英闻天天译： 油箱警示灯要注意

In fact, the driving test should arguably involve being quizzed on the perils of running out of petrol rather than being made to reverse around a corner: under-35s were revealed as making up two-thirds of the drivers you will see standing glum, and vulnerable, by the roadside having exhausted their petrol. So what are the risks and if you are a long way from a forecourt, what is the best way to conserve the last drops? The first thing to realise is that fuel gauges are not precise instruments. Even in the most modern and snazzy cars, the technology is relatively basic: the level in the tank is measured by a float, like the ballcock in a lavatory cistern. The height of this float is then relayed to your gauge either electronically, or through the use of metallic strips and coils. It explains why the level of petrol in your tank can fall or rise depending if your car is on a gradient. And it means that when your car tells you how many miles you have left in the tank, or that you are about to run out, it can only ever be a rough guide.