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You’re alone, driving on a deserted stretch of highway. Suddenly you are enclosed by clouds of smoke and steam as the engine-tem
You’re alone, driving on a deserted stretch of highway. Suddenly you are enclosed by clouds of smoke and steam as the engine-tem
admin
2011-04-26
39
问题
You’re alone, driving on a deserted stretch of highway. Suddenly you are enclosed by clouds of smoke and steam as the engine-temperature light flashes its red warning. You pull over to the slow lane and switch on the four-way emergency flashers. Then what? Should you keep on rolling or get off the road as fast as you can safely do so?
Knowing what is happening and what to do in a car emergency can save time, money, worry--even your life.
So learning how to check your car will help you handle some common car emergencies.
The engine’s bearings must constantly be lubricated (使润滑) by oil that circulates under pressure. When the oil pressure drops too low, the engine begins to self-destruct. The red oil-pressure warning light flashes on. Listen for any knocking, and sign of serious trouble. If the warning light flashes only at highway speeds and goes out at low speeds or while the engine idles, chances are’ the engine is just slightly low on oil. If the light goes on at idle, but goes out when you accelerate, drive slowly to the repair shop. It is a matter of minutes after oil pressure drops that serious engine damage occurs. You could destroy the engine.
The engine temperature warning light signals that the engine is running hotter than normal. Switching on your heater at the first sign of overheating may help delay a boilover--by drawing off some of the excess heat. Reducing speed may also help. If the light goes out, proceed to the nearest service station for help. If too much coolant has been lost, the engine will boil over, surrounding the engine with steam. If this happens, pull completely off the road, stop and wait. Don’t rush out and open the hood (发动机翼) in the steam. Wait until the vapor goes away and the engine metal cools. But remember that this can take a few hours on a hot summer day.
The last sentence in the last paragraph implies that ______.
选项
A、it is difficult to cool the engine
B、the driver can only open the hood on a hot summer day
C、the driver has to be very patient
D、it takes a long time to open the hood in summer
答案
C
解析
本题为细节推理题。文中提到,当蒸汽冒出来时,千万不要马上打开车罩,要等到水蒸汽散尽了,发动机金属冷却下来了再说,但如果在夏天,这个过程通常要等上几小时。所以,言下之意,司机应当耐心等待。
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