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单选题
Make sure that the quantity of fuel in the tank is not more than 500 liters.
A
Ensure that the fuel quantity in the tank does not exceed 500 liters.
B
Make sure that the amount of fuel in the tank is exactly 500 liters.
C
Make certain that the fuel level in the tank does surpass 500 liters.
答案解析
正确答案：A
