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单选题
If the fuel leak originates at the valve, replace the valve seals.
A
If the valve is the source of the fuel leak, discard the valve seals and install new ones.
B
If the fuel leaks out of the valve, reinstall the valve seals.
C
If the fuel leak flows towards the valve, discard the valve seals and install new ones.
答案解析
正确答案：A
相关知识点：
燃油阀漏换密封件
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