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Sanitary stm valves to be dismantled cleaned ground coated with then refitted in der


参考答案：Sanitary steam valves to be dismantled, cleaned, ground, ...

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is the actual amount of water vapour in the air compared with the saturation 饱和 amount of water vapour in the air at the same temperature pressure the figure is usually expressed as a percentage

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One of the two systems established by GMDSS f the transmission automatic receipt of Maritime Safety Infmation is

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The Authity reserves the right to accept f pilots by vessels in anchages if the vessels have repted their anched position

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