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[单选] One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is()

A . seal water supply be cut off
B . make up water supply be cut off
C . oil outlet valve closed or not open sufficiently
D . the flow rate of oily water is too much

准时生产制中的“浪费”指的是()。 原材料的浪费。 时间的浪费。 多余生产的浪费。 凡是超出增加产品价值所必需的绝对最少的物料、机器和人力资源的部分。 If an electric cargo winch is being used to lift a draft of cargo and the engine room loses all power,which will occur?() A pawl,forced by a spring mechanism,will engage the teeth of the bull gear and hold the load。 An electromagnetic brake will hold the load where it is suspended。 The load will fall rapidly to the deck unless the foot brake is engaged。 The load will slowly lower to the deck under control of the drag of the winch motor。 当计算机被启动时,最先执行的是()。 接口程序。 中断服务程序。 用户程序。 引导程序。 接地导体应由()或其他抗腐蚀金属制成。 水稻的一生要经历()和()两个时期。 One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is()
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