我国《地表水环境质量标准》(GB3838-2002)中砷的III类标准值为≤()mg/L《污水综合排放标准》(GB8978-1996)第一类污染物中总砷的最高允许排放浓度为()mg/L.
A. 0.05,0.5
B. 0.1,10
C. 0.05,1.0
D. 0.1,0.5
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低压配电系统的N线应当为()色线。
A. 白
B. 淡蓝
C. 黑
D. 粉
It is the news ()most parents of the hope that there is a safe and socially approved road to a kind of life they themselves have not had, but their children can.
A. that deprive
B. that it deprives
C. that deprives
D. when it deprive