一般认为可生化性指标BOD5/ COD值须大于()的污水才适于采用生化处理。A、0.2B、0.3C、0.4D、0.5

一般认为可生化性指标BOD5/ COD值须大于()的污水才适于采用生化处理。

  • A、0.2
  • B、0.3
  • C、0.4
  • D、0.5

相关考题:

可生化性指标是指( ) A. BOD5/TODB. BOD5/CODC. BOD5/TOCD. COD / BOD5

有一过程如下:Sub Sub1(m As Integer,total As Long)Dim i As Integertotal=1For i=1 To mtotal=total*iNextEnd Sub调用它的事件过程如下:Private Sub Command1_Click()Dim tot As Long,a As Integera=Val(InputBox("请输入数据"))Call Sub1(a,tot)Print totEnd Sub则输入数据5,运行结果为【 】。

(12)有下列Sub过程: Sub Sub(x As Single,y As Single) t=x x=t/y y=t Mody End Sub 在窗体上的命令按钮Commandl中,编写下列事件过程,执行该事件过程调用Sun过程,结果是( )。 Private Sub Commandl_Click() Dim a As Single Dim b As Single a=5 b=4 Sun a,b Print a;b End Sub A.1.25 1 B.5 4 C.4 5 D.1 1.25

以下程序的运行结果是sub(int x,int y,int *z){*z=y-x;}main(){ int a,b,c;sub(10,5,a);sub(7,a,b);sub(a,b,c);printf("M,M,M\n",a,b,c);}A.5,2,3B.-5,-12,-7C.-5,-12,-17D.5,-2,-7

下列程序的运行结果是______。Sub abcd(ByValn As Integer)n=n+5End SubPrivate Sub Form_Click()nx%=3Callabcd(nx%)Printnx%End Sub

假定有如下的Sub过程:Sub Sub1(x As Single,y As single)t=xx=t/yy=t Mod yEnd Sub在窗体上画一个命令按钮,然后编写如下事件过程:Private Sub Command1_click()Dim a As SingleDim b As Singlea=5b=4Sub1 a,bPrint a;bEnd Sub程序运行后,单击命令按钮,输出结果为A.B.C.D.

假定有如下的Sub过程:Sub Sub1 (x As Single, y As Single) t=x x = t/y y = t Mod yEnd Sub 在窗体上画一个命令按钮,然后编写如下事件过程:Private Sub Command1_ Click() Dim a As Single Dim b As Single a = 5 b = 4 Sub1 a, b Print a; b End Sub 程序运行后,单击命令按钮,输出结果为______。A.5 4B.1 1C.1.2 5.4D.1.25 1

执行下面的一段C程序后,输出结果变量应为______。sub (int x, int y, int *z) { *z=y-x; } main() { int a, b, c; sub (10, 5, sub(7, a, sub(a, b, printf ("%d, %d, %d\n", a, b, c); }A. 5, 2, 3 B. -5, -12, -7 C. -5, -12, -17 D. 5, -2, -7

SBR二级处理BOD5/sub去除率达()A、90%B、50%C、20%D、5%以下

废水的可生化性一般用BOD5/COD值表示,当BOD5/COD的比值为下列哪个值时则不宜采用生物法处理()A、BOD5/COD=0.5B、BOD5/COD=0.6C、BOD5/COD=0.2D、BOD5/COD=0.4

一般情况下,污水的可生化性取决于()A、BOD5/COD的值B、BOD5/TP的值C、DO/BOD5的值D、DO/COD的值

评价废水可生化性的重要指标是()。A、COD/DOB、TOC/CODC、DO/TOCD、BOD5/COD

class super {  public int getLength()  {return 4;}  }  public class Sub extends Super {  public long getLength() {return 5;}  public static void main (String[]args)  {  super sooper = new Super ();  Sub sub = new Sub();  System.out.printIn(  sooper.getLength()+ “,” + sub.getLength()   };  }  What is the output?()  A、 4, 4B、 4, 5C、 5, 4D、 5, 5E、 The code will not compile.

class Super { public int getLenght() { return 4; } } public class Sub extends Super { public long getLenght() { return 5; } public static void main(String[] args) {Super sooper = new Super(); Sub sub = new Sub(); System.out.println( sooper.getLenght() + “,” + sub.getLenght() ); } } What is the output? ()A、 4,4B、 4,5C、 5,4D、 5,5E、 Compilation fails.

BOD5/COD的比值叫可生化性指标,一般比值越大,越易被生化处理。

将硬盘C:///SUB下的全部文件(总长度超过5MB)备份到软盘,用()命令一定不可以。A、BACKUP C://SUB/*.*A:B、BACKUP C:///SUB A:C、COPY C:///SUB A:D、BACKUP C:///SUB B:

单选题一般认为可生化性指标BOD5/ COD值须大于()的污水才适于采用生化处理。A0.2B0.3C0.4D0.5

单选题class Super {  public Integer getLenght() { return new Integer(4); } }  public class Sub extends Super {  public Long GetLenght() { return new Long(5); }  public static void main(String[] args) { Super sooper = new Super();  Sub sub = new Sub();  System.out.println(  sooper.getLenght().toString() + “,” +  sub.getLenght().toString() ); } }  What is the output?()A 4,4B 4,5C 5,4D 5,5E Compilation fails.

单选题SBR二级处理BOD5/sub去除率达()A90%B50%C20%D5%以下

单选题酶促反应速度(v)达到最大反应速度(Vmax)的80%时,底物浓度[S]为Ap1Ksubm/sub/pBp2Ksubm/sub/pCp3Ksubm/sub/pDp4Ksubm/sub/pEp5Ksubm/sub/p

单选题class super {  public int getLength()  {return 4;}  }  public class Sub extends Super {  public long getLength() {return 5;}  public static void main (String[]args)  {  super sooper = new Super ();  Sub sub = new Sub();  System.out.printIn(  sooper.getLength()+ “,” + sub.getLength()   };  }  What is the output?()A 4, 4B 4, 5C 5, 4D 5, 5E The code will not compile.

填空题污水的可生化性取决于(),可用()评价。一般情况下,BOD5/COD越大,污水可生化性(),反之亦然。BOD5/COD﹤0.3,则称该污水(),BOD5/COD=0.3~0.45,则称该污水(),BOD5/COD﹥0.4,则称该污水()。

单选题class Super { public int getLenght() { return 4; } } public class Sub extends Super { public long getLenght() { return 5; } public static void main(String[] args) {Super sooper = new Super(); Sub sub = new Sub(); System.out.println( sooper.getLenght() + “,” + sub.getLenght() ); } } What is the output? ()A 4,4B 4,5C 5,4D 5,5E Compilation fails.

单选题下列测量结果的表示中,错误的是()。ApIsubS/sub=10.0413A,Usubrel/sub=5×10sup-5/sup,k=2 /pBpIsubS/sub=10.0413(1±5×10sup-5/sup)A,k=2 /pCpIsubS/sub=(10.0413±5×10sup-5/sup)A,k=2 /pDpIsubS/sub=10.0413A,Usub95rel/sub=5×10sup-5/sup,Vsubeff/sub=9 /p

单选题正态分布时,算术平均数、中位数、众数的关系为()Amsub0/sub<msube/sub<(xBmsub0/sub=msube/sub=(xCmsub0/sub>msube/sub>(xDmsube/sub<msub0/sub<(x

多选题1. class Super {  2. private int a;  3. protected Super(int a) { this.a = a; }  4. }  .....  11. class Sub extends Super {  12. public Sub(int a) { super(a); }  13. public Sub() { this.a= 5; }  14. }  Which two, independently, will allow Sub to compile?()AChange line 2 to: public int a;BChange line 2 to: protected int a;CChange line 13 to: public Sub() { this(5); }DChange line 13 to: public Sub() { super(5); }EChange line 13 to: public Sub() { super(a); }

多选题下列表示中____的表示形式是正确的。ApUsub95/sub= 1%,vsubeff/sub =9 /pBpUsubr/sub= 1%,k=2 /pCpusubC/sub=0. 5% /pDpusubC/sub=±0 5%.k=1 /p