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【B8】

A. worried
B. concerned
C. troubled
D. shocked

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设置屋顶消火栓的目的是用于消防人员定期检查室内消火栓给水系统的供水。()

According to the passage, which of the following is TRUE？

A. Modern humans, Neandertals and Denisovans lived completely separated.
B. Denisovans and modern humans were more closely related.
C. Modern humans and Neandertals were more closely related.
D. There were exchanges between Denisovans and modern humans.

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感温元件又称热敏感元件，是开式喷头实现自动喷水性能的重要元件。()

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高倍数泡沫灭火系统是指泡沫发泡倍数大于20倍的泡沫灭火系统。()

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【B8】

A. worried B. concerned C. troubled D. shocked

设置屋顶消火栓的目的是用于消防人员定期检查室内消火栓给水系统的供水。()

According to the passage, which of the following is TRUE？

感温元件又称热敏感元件，是开式喷头实现自动喷水性能的重要元件。()

高倍数泡沫灭火系统是指泡沫发泡倍数大于20倍的泡沫灭火系统。()

A. worried
B. concerned
C. troubled
D. shocked