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单选题
确保液压油箱内的液压油高于最低液面。
A
A.Make sure that the oil in the hydraulic tank is above the minimum lever.
B
B.Make sure that the fluid in the hydraulic reservoir is above the minimum level.
C
C.Make sure that the fluid in the fuel reservoir is below the maximum level.
答案解析
正确答案：B
相关知识点：
确保液压油箱油高于最低液面
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