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【多选题】
燃油费成本控制的方法包括( )。
A.
把握合适的燃油采购时机
B.
控制船舶燃油消耗
C.
低成本加油港的选择
D.
完善燃油采购机制
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【多选题】能产生累积误差的定位方式有（    ）。
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计轴器定位
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测速定位
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【简答题】Boxing was long viewed sickly. Generally forbidden by law in earlier days, the fighting was usually done with bare fists, and matches often lasted forty or fifty rounds. In 1882 John L. Sullivan, a fi...
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