给油箱加油时，等待膨胀箱加满和把燃油加到加油口处的作法是不正确的。
Filling the tank, waiting for the expansion tank to fill, and then topping off the filler neck is improper fueling procedure .
给油箱加油时，等待膨胀箱加满和把燃油加到加油口处的作法是不正确的。
Filling the tank, waiting for the expansion tank to fill, and then topping off the filler neck is improper fueling procedure .
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