某种废水仅含氨氮不含有机COD,水量为2000m3/d,氨氮浓度为250mg/L,含有足够碱度,拟采用先硝化后反
A.2239kg02/d,874kg甲醇/d
B.1845kg02/d,198kg甲醇/d
C.224kg02/d,88kg甲醇/d
D.185kg02/d,20kg甲醇/d
A.2239kg02/d,874kg甲醇/d
B.1845kg02/d,198kg甲醇/d
C.224kg02/d,88kg甲醇/d
D.185kg02/d,20kg甲醇/d
A.1/3x3+sinx+c1x+c2
B.1/6x3-sinx+c1x+c2
C.1/2x2-cosx+c1x-c2
D.1/2x2+sinx-c1x+c2
A.f(x)为偶函数,值域为(-1,1)
B.f(x)为奇函数,值域为(-∞,0)
C.f(x)为奇函数,值域为(-1,1)
D.f(x)为奇函数,值域为(0,+∞)
A.a(x)与β(x)是等价无穷小
B.a(x)是β(x)是高价无穷小
C.a(x)是β(x)是低价无穷小
D.a(x)是β(x)是同价无穷小但不是等价无穷小
A.0.200 0 g
B.0.565 8 g
C.1.1316g
D.2.829 1 g
A.1895Pa
B.773Pa
C.2245Pa
D.74327Pa
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