铁路、公路、输油输气管线在建设项目厂址选择时称为()。
A.厂址选择
B.坝址选择
C.地形选择
D.线路选择
参考答案:D
— My colleague felt quite happy because his solution was closer now to ______.
— Congratulations!
A.having adopted
B.be adopted
C.being adopted
D.be adopted
慢走丝中的树脂交换器的作用是()。