可以增强炉渣脱硫能力的是()。
A.FeO
B.CaO
C.SiO2
D.C
参考答案:B
综合填空 根据短文大意和语境选择方框内的单词,并用其正确的形式填入空白处(5分)
Sue is my friend. We are in the __小题1:__ class. She __小题2:__ from Canada. She is in Shanghai now. __小题3:__ parents work here. Her father is a doctor. He works in a hospital. Her mother is an office worker. Sue’s parents like Chinese food very much, __小题4:__ Sue doesn’t. She likes chicken. They __小题5:__ like Chinese people. They think Chinese people are very kind.
某热水网路,各用户的流量:用户1和用户3均为60m3/h,用户2为80m3/h,热网示意图如下图所示,压力测点的压力数值见下表,若管网供回水接口的压差保持不变,求关闭用户1后,用户2、3的流量应是下列哪一项()。
A.用户2为80m3/h,用户3为60m3/h
B.用户2为84~88m3/h,用户3为62~66m3/h
C.用户2为94~98m3/h,用户3为70~74m3/h
D.用户2为112~116m3/L,用户3为84~88m3/L