石油(petroleum)
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1、A petroleum liquid has a flash point o
A petroleum liquid has a flash point of 85°F. This is a grade ().AB flammable liquidBC flammable liquidCD combustible liquidDE combustible liquid
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2、Petroleum is a result of the()of plant
Petroleum is a result of the()of plant or animal matter in areas which are slowly subsiding.AdepressionBdescriptionCdestructionDdepositio
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3、The American Petroleum Institute recom
The American Petroleum Institute recommends that connecting links and anchor shackles be inspected using().Avisual examinationsBmagnetic particle inspectionCdye penetrant inspectionDx-ray inspectio
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4、根据石油所含烃类主要成分的不同可以把石油分为烷基石油(石蜡基石油)、环烷基石
根据石油所含烃类主要成分的不同可以把石油分为烷基石油(石蜡基石油)、环烷基石油(沥青基石油)和()三大类。
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5、液体燃料中的()液体燃料为石油,石油大体分为石蜡基石油、环烷基石油、混合基石
液体燃料中的()液体燃料为石油,石油大体分为石蜡基石油、环烷基石油、混合基石油及特殊石油等四类,它们可作为原料加工出各种产品。AA.天然BB.人造CC.最优越的
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6、The weight of liquefied petroleum gas
The weight of liquefied petroleum gas vapors as compared to air is().AvariableBthe sameClighterDheavier