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单选题
推荐的燃油节约程序应包含一个警告（如适用），即制造商推荐的功率设置必须在新的和新检修的发动机磨合期间使用。
A
The recommended fuel conservation procedures shall contain a caution, if useful, that the power settings recommended by the manufacturer must be used during the use period of new and newly overhauled engines.
B
The recommended fuel conservation procedures shall contain a caution, if applicable, that the power settings recommended by the manufacturer must be used during the break-in period of new and newly overhauled engines.
C
The receptable fuel conservation procedures shall contain a caution, if applicable, that the power settings recommended by the manufacturer must be used during the management period of new and newly overhauled engines.
答案解析
正确答案：B
相关知识点：
燃油节约程序含磨合警告
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