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第三，防止粉塵沈積並及時清理粉塵，避免二次爆炸。如：粉塵間的地面、牆面、頂棚應平滑，梁與柱子應加以覆蓋，管線等盡量不要穿越粉塵車間，並且不要在牆內敷設；做好清潔工作，及時采用防爆型真空式吸塵設備進行人工清掃，在條件允許的情況下，可以用噴霧狀水進行潤濕降塵；提高空氣的相對濕度，可以防止粉塵沈降形成粉塵雲，並能吸收粉塵氧化産生的熱量，增加空氣和粉塵的導電性能，減少靜電。

2、從助燃劑方面進行預防

　　通常采用惰性氣體保護。惰性氣體保護的原理是，在粉塵和空氣的混合物中，充入惰性氣體，降低系統中的氧氣含量，從而使粉塵爆炸因缺氧不能發生。工業中通常使用的惰性氣體有N2、CO2等。

　　惰化有真空惰化、壓力惰化、壓力——真空聯合惰化、吹掃惰化和虹吸惰化等。

3、點火源方面進行預防

　　粉塵的爆炸必須要有足夠的點火能量，因此通過對點火源的預防，可以有效的防止粉塵爆炸事故的發生。

　　在實際的工業生産中，引起粉塵爆炸的點火源很多，常見點火源有沖擊或摩擦、靜電火花、熔接或熔斷火花、自燃火花、明火、金屬過熱和電氣火花七種。因此，在有粉塵産生的場所，就必須根據具體的操作環境進行有針對性的火源預防。

以上文章由宁波防爆電氣檢測机构-國瑞檢測整理發布，文章鏈接：/html/news62.html。国瑞检测是一家从事防爆电气（电器）检测，防靜電檢測，氣體探測器檢測等检测技术服务型公司。公司先后通过国家检验检测机构资质认定，ISO9001质量管理体系、ISO14001环境管理体系、OHSAS18001职业健康安全管理体系、企业信用“AAA”级等认证。

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"Then be kind enough to change me a dollar bill," said the stranger, drawing the beaver skin from under his coat and laying it on the counter. The nondescript individual whom we saw among the passengers early in the voyage had joined the party, and heard the story of Captain Hunting's[Pg 68] whale. When it was ended, he ventured to say something on the subject of whaling. "But if she should be at Wiggins--" "I prayed for you." Second. Impact wheels, driven by the force of spouting water that expends its percussive force or momentum against the vanes tangental to the course of rotation, and at a right angle to the face of the vanes or floats. "So this brave lady succeeded in getting the sentence of death withdrawn. But the Germans wanted to torture their wretched prisoners on any or no plea. They were placed near the church wall, kept standing there all night, were told that they would be shot by and by, and threatened by the soldiers with their bayonets. "Yes, men, what the gentleman says is true." But a profounder analysis of experience is necessary before we can come to the real roots of Plato’s scheme. It must be remembered that our philosopher was a revolutionist of the most thorough-going description, that he objected not to this or that constitution of his time, but to all existing consti254tutions whatever. Now, every great revolutionary movement, if in some respects an advance and an evolution, is in other respects a retrogression and a dissolution. When the most complex forms of political association are broken up, the older or subordinate forms suddenly acquire new life and meaning. What is true of practice is true also of speculation. Having broken away from the most advanced civilisation, Plato was thrown back on the spontaneous organisation of industry, on the army, the school, the family, the savage tribe, and even the herd of cattle, for types of social union. It was by taking some hints from each of these minor aggregates that he succeeded in building up his ideal polity, which, notwithstanding its supposed simplicity and consistency, is one of the most heterogeneous ever framed. The principles on which it rests are not really carried out to their logical consequences; they interfere with and supplement one another. The restriction of political power to a single class is avowedly based on the necessity for a division of labour. One man, we are told, can only do one thing well. But Plato should have seen that the producer is not for that reason to be made a monopolist; and that, to borrow his own favourite example, shoes are properly manufactured because the shoemaker is kept in order by the competition of his rivals and by the freedom of the consumer to purchase wherever he pleases. Athenian democracy, so far from contradicting the lessons of political economy, was, in truth, their logical application to government. The people did not really govern themselves, nor do they in any modern democracy, but they listened to different proposals, just as they might choose among different articles in a shop or different tenders for building a house, accepted the most suitable, and then left it to be carried out by their trusted agents. We've accepted, so please don't object, Daddy dear. heat of the going they get so breathless and panting that they lose The young prince then goes on his way in search of the magical flower. He is about to rest awhile in a cavern, but at the moment when he lies down on a stone it is transformed into a monster made of bladder, which rears itself enraged in the air with a trumpet-cry. By good luck the king's son calls upon the aid of the prophet Suleiman, whom the dragon also reveres, and the pacified monster conveys Tazulmulook to the garden of Bakaoli, and, moreover, gives him a ring which will be a talisman in danger. But the minister still refused to see it. He looked him very squarely in the eyes now, however. "See here, I am going to take lemon pop, my friend," he said. Nevertheless she decided that it might be best to tell her husband, and she did so as they sat together by the fire after the moon had risen into the small stretch of sky above the mountain peaks. They had bought a live sheep that day from a Mexican herder who had passed along the road, and they were now cutting ribs from the carcass that hung from the branch of a near-by tree, and broiling them on the coals. Felipa finished an unimpassioned account of the afternoon's happenings and of Alchesay's advice, and Landor did not answer at once. He sat thinking. Of a sudden there was a rustle and a step among the pines, and from behind a big rock a figure came out into the half shadow. Felipa was on her feet with a spring, and Landor scrambled up almost as quickly. "The one built of poles? Yes." "On Saturday, July 30, Dr. Johnson and I took a sculler at the Temple-stairs, and set out for Greenwich. I asked him if he really thought a knowledge of the Greek and Latin languages an essential requisite to a good education. JOHNSON. 'Most certainly, Sir; for those who know them have a very great advantage over those who do not. Nay, Sir, it is wonderful what a difference learning makes upon people even in the common intercourse of life, which does not appear to be much connected with it.' 'And yet, (said I) people go through the world very well, and carry on the business of life to good advantage, without learning.' JOHNSON. 'Why, Sir, that may be true in cases where learning cannot possibly be of any use; for instance, this boy rows us as well without learning, as if he could sing the song of Orpheus to the Argonauts, who were the first sailors.' He then called to the boy, 'What would you give my lad, to know about the Argonauts?' 'Sir, (said the boy) I would give what I have.' 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