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单体附加系（Monosomic additive line）
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特定成本计算的一般公式是（ ）。A.特定业务的单位成本=特定费用总额/特定业务工作量B.特定业务的单位成本=特定费用总额/（特定业务工作量+附加系数）C.特定业务的单位成本=特定费用总额/（特定业务工作量-附加系数）D.特定业务的单位成本=特定费用总额/特定业务工作量×附加系数
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An additive used to improve the ability of a lube oil to reduce friction is known as a/anA.suppressant additiveB.dispersant additiveC.extreme pressure additiveD.viscosity improver additive
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What is a by-product of burned coal?A. Aluminum, silicon, and magnetic.B. Paving material.C. Fly ash.D. Concrete additive.
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检索钙（calcium）用于食品（food）或者饲料（feed）的添加剂（additive）的英文信息，检索式是：calcium and food or feed and additive
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单选题Which lubricating oil additive is used in diesel engines to reduce the tendency for sludge and varnish to form on the engine parts?（）A
Flash point improversB
Pour point improversC
InhibitorsD
Foam suppressors
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单选题Any carbon built up on surfaces must be washed away by （） additives and held in suspension by a （） additive.A
dispersant；detergentB
detergent；dispersantC
dispersant；dispersantD
detergent；detergent
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单选题An additive used to improve the ability of a lube oil to reduce friction is known as a/an （）.A
suppressant additiveB
dispersant additiveC
extreme pressure additiveD
viscosity improver additive
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名词解释题相加作用additive
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