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单选题
在紧急情况下，可使用F-43燃油替代F-34和F-40燃油。
A
In an emergency, you can use fuel F-43 as an alternative to fuels F-34 and F-40.
B
In an emergency, you can replace fuels F-43 with fuels F-34 and F-40.
C
In an emergency, fuel F-43 can be used as an alternate to fuels F-34 and F-40.
答案解析
正确答案：A
相关知识点：
紧急情况燃油替代考点
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