试题与答案

蒸发操作实际上是在间壁两侧分别有蒸汽冷凝和液体沸腾的传热过程。

题型:判断题

题目:

蒸发操作实际上是在间壁两侧分别有蒸汽冷凝和液体沸腾的传热过程。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:当工作面推进一次或二次之后,工作空间达到允许的最大宽度,为最大控顶距。最小控顶距一般为3排支柱。

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小题3:Our local weather station          (预报) there would be a thunderstorm the next day.

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小题5:He made very positive          (贡献) to the success of the project.

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小题7:Her mother is a quiet woman with          (优雅的) manners.

小题8:The          (经济) of our country has been developing steadily.

小题9:Do you have any          (以前的) experience of this type of work?

小题10:I don’t have the          (力气) to do it again.

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