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例1一辆行驶近20万 km、装配3.0 L 多点燃油喷射发动机的别克轿车,低温起动发动机时,经常会出现2种情况,一是发动机能够非常顺利起动着,而且轿车一天都会使用正常;二是若第一次起
Example 1 A Buick sedan traveling nearly 200,000 km and equipped with a 3.0 L multi-drop fuel injection engine often has two situations when the engine is started at a low temperature. One is that the engine can start very smoothly and the car can be used normally all day. Second, if the first time