二流雾化
参考答案:
由雾化介质流体与金属液流构成的雾化体系称为二流雾化。
I__________sooner but I didn't know that they were waiting for me. [ ]
A. had come
B. was coming
C. would come
D. would have come
读下方黄河水系图,回答下列问题:
(1)图中①是______河,②是______河;它们都位于黄河的_______游。
(2)从干湿地区看,黄河下游流经________地区。
(3)黄河下游最大的水利枢纽是__________,其主要作用是__________。
(4)黄河下游除了“地上河”的忧患之外,近些年尤为突出的问题是_____________________________。
应立即采取的措施是_____________________________________________。