Keep gas tank full to avoid ice in the tank and fuel lines.

保证油箱加满以避免油箱内或汽油管路结冰。

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Note: Keep in mind, that lines after this function will be executed before callback.

注意：此行以后的代码将在这个回调函数执行前执行。

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Note: Keep in mind, that lines after this function will be executed before callback.

注意：此行以后的代码将在这个回调函数执行前执行。

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