艾德莱斯主要采用（）方法。

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问题填空题

艾德莱斯主要采用（）方法。

答案

参考答案：二方连续图案构成

单项选择题

A．Global temperatures rose by 3 degrees in the 20th century.

B．Global warming may spread disease that could kill a lot of people in Africa.

C．Developed countries no longer depend on fossil fuels for transport and power.

D．The impact of the global warming will be radically reduced by 2050.

填空题

PW型泵是单级离心（）泵。