单选题我国颁发的内河通航标准中规定的二级航道的剩余水深为:()A0.4~0.5mB0.3~0.4mC0.2~0.3mD0.2m
单选题
我国颁发的内河通航标准中规定的二级航道的剩余水深为:()
A
0.4~0.5m
B
0.3~0.4m
C
0.2~0.3m
D
0.2m
参考解析
解析:
暂无解析
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