确保油箱中的燃油量不超过500升。()A. Make sure that there is no less than 500 liters of fuel in the tank.B. Ensure that the amount of fuel in the tank does not exceed 500 liters.C. Make sure that the quantity of fuel in the tank is not more than 500 liters.

本题考查对中文句子的英文翻译理解，解题思路是准确理解中文句子的含义，然后分析每个英文选项的意思，看哪个选项与中文句子意思一致。

• 中文句子“确保油箱中的燃油量不超过500升”，核心意思是燃油量要小于或等于500升。
• 选项A：“Make sure that there is no less than 500 liters of fuel in the tank.”，“no less than”表示“不少于”，也就是燃油量要大于或等于500升，与中文句子意思不符。
• 选项B：“Ensure that the amount of fuel in the tank does not exceed 500 liters.”，“does not exceed”表示“不超过”，即燃油量小于或等于500升，与中文句子意思一致。
• 选项C：“Make sure that the quantity of fuel fuel in the tank is not more than 500 liters.”，“not more than”表示“不超过”，同样意味着燃油量小于或等于500升，与中文句子意思相符。