螺杆式压缩机最常用的能量调节方法采用()。

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问题:

螺杆式压缩机最常用的能量调节方法采用()。

考点:制冷设备维修工高级制冷设备维修工高级制冷设备维修工题库
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打开工作簿文件EXCEL.XLS,将工作表sheet1的A1:C1单元格合并为一个单元格,内容水平居中,计算投诉量的“总计”行及“所占比例”列的内容(所占比例=投诉量/总计),将工作表命名为“产品投诉情况表”。

题型:填空题

根据要求改写下列句子。

1. Li Ming often reads English in the morning. (改为一般疑问句)

    _____ Li Ming often _____ English in the morning?

2. They like their presents. (改为否定句)

    They _____ _____ their presents.

3. He usually gets up at fire o'clock. (划线部分提问)

    _____ _____ _____ he usually _____ up?

4. I like blue very well. (改为同义句)

    Blue is my _____ _____.

5. There is an apple on the tree. (改为复数)

    There _____ _____ on the tree.

6. Can she speak Japanese? (作否定回答) 

    _____, she _____.

7. It's nine thirty now. (改为同义句)

    It's _____ _____ _____ now.

8. I watch TV on Saturday evening. (将主语 I 换成 He)

    _____ _____ TV on Saturday evening.

题型:填空题

()冲击地压的地区,两头对掘贯通爆破,当相距20m时,必须停止一头作业。

A、无

B、有

C、有或无

题型:填空题

不属于计量史学的研究要素的是?()

A、数据

B、人口

C、税收

D、语义

题型:填空题

腧穴是()之气()的特殊部位。

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