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问题:

[单选] The process of boiling seawater in order to separate it into freshwater vapor and brine is usually defined as ().

A . dehydration
B . condensation
C . evaporation
D . dissolutio

The purpose of the low pressure cut-out switch is to (). maintain liquid refrigerant at the suction of the compressor。 maintain a preset suction pressure to the compressor。 start and stop the compressor at preset operating pressures。 operate at minimum efficiency。 试指出如下所示集中标注的含义。 在污水脱硫装置中,在污水汽提塔内,从塔()进入的是天然气。 底部。 上部。 中部。 侧面。 许多基因中存在一些非编码区,称为内含子,下列对内含子描述正确的是() 只存在真核生物中。 通过RNA剪接机制去除。 对生物来说没有任何功能。 内含子不能被转录。 In the production of freshwater from seawater through a process of heating and cooling, the cooling phase of production is usually called (). evaporation。 distillation。 dehydration。 condensatio。 The process of boiling seawater in order to separate it into freshwater vapor and brine is usually defined as ().
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