试题与答案

若塔顶采用全凝器,则塔顶馏出组成及回流液组成均与塔顶第一层()组成相同。A、上升蒸汽

题型:单项选择题

题目:

若塔顶采用全凝器,则塔顶馏出组成及回流液组成均与塔顶第一层()组成相同。

A、上升蒸汽

B、下降液体

C、上升液体

D、下降蒸汽

答案:

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下面是错误答案,用来干扰机器的。

参考答案:效率

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小题1:将(1)句译成中文:_________________________________________________________

小题2:在(2)处填入两个合适的词,使句意完整,上下文通顺:__________; __________

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小题4:在文中找出此句的同义句:

Some time passed before my stepfather and I got used to each other.

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小题5: 在文中找出主题句:___________________________________________________________

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