According to the occurrence frequency of with explosive dust mixture and duration partition according to the following provisions: A 10 area present continuously or explosive dust environment for a lo
According to the equipment the properties of category determine its handling way to ensure the equipment safety in the process of unloading and handling is in good condition. 2. According to the equip
According to the construction site conditions living area in the west side of the field. Living facilities including worker dormitory canteen workers the site toilet shower room playroom clinic smokin
How to realize the dream Where would you like to be a year from now What would you love to be doing一年之后你何去何从你想做什么呢Some might say that this is a matter of graduates we still early However after t
Part I Warming upA. News Item 1: Central Bank MeetingCentral Bank: A nations principal monetary authority such as the Federal Reserve Bank which regulates the money supply and credit issues currency
According to the requirements of the electrical and mechanical engineering industries mechanical and electrical engineering is divided into several industries Large long distance oil and gas pipeline
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According to the purposes are divided into iron and steel industry non-ferrous metal industry petrochemical industry silicate industry power industry waste incineration melting furnace refractory mate
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According to instrument shell protection performance can be divided intomon type dust-proof airtight splash proof waterproof watertight and flame-proof type etc. (5) according to instrument shell
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