| 1. | The alkanes are generally inert to ionic reagents . 烷烃一般说来对离子型试剂是不活泼的。
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| 2. | The alkanes are non-polar . 烷是非极性的。
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| 3. | A hydrocarbon was known to be either an alkene or alkane . 某碳氢化合物已知可能是烯烃或是烷烃。
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| 4. | The general uses of alkanes may be divided into three categories . 烷的一般用途可分为三个方面。
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| 5. | Alkanes are resistant to attack by oxidizing agents generally . 烷烃一般对于氧化剂的作用是稳定的。
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| 6. | The straight-chain alkanes exacerbate the problem of engine "knock" . 直链烷烃使机器的“爆震”问题更加严重。
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| 7. | the alkanes form a homologous series of general formula h. 烷形成是有通式H的同系列。
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| 8. | The gradation in the physical properties of the alkanes is typical of a homologous series . 烷烃物理性质的逐渐变化是同系列的特点。
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| 9. | Alkanes can be chlorinated or brominated by treatment with chlorine or bromine in the presence of visible or uv light . 烷在可见光或紫外光照射下,用氯或溴处理才能氯化或溴化。
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| 10. | Alkanes can be chlorinated or brominated by treatment with chlorine or bromine in the presence of visible or uv light . 烷在可见光或紫外光的照射下,用氯或溴处理能氯化或溴化。
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