分销管理是对产成品从制造商到配送中心再到最终消费者的整个过程的管理。（）
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In ship construction, frame spacing is（）.
A. greater at the bow and stern
B. reduced at the bow and stern
C. uniform over the length of the vessel
D. uniform over the length of the vessel, with the exception of the machinery spaces, where it is reduced due to increased stresse
将开始引燃火焰的最低（）称为闪点。
A. 气压
B. 温度
C. 湿度
D. 海拔
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