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【单选题】
下列关于废水生物除磷的说法中错误的是( )。A.
废水的生物除磷过程是利用聚磷菌从废水中过量摄取磷，并以聚合磷酸盐贮存在体内，形成污泥，通过排放剩余污泥将污泥排出系统，达到除磷目的
B.
菌只有在厌氧环境中充分，在后续的好氧环境中实现过量摄磷
C.
普通聚磷菌只有在好氧条件下，过量摄取废水中的磷；而反硝化除磷菌则可以在有硝态氮存在的条件下，实现对废水中磷的过量摄取
D.
生物除磷系统中聚磷菌的数量对于除磷效果至关重要，因此，一般生物除磷系统的污泥龄越长，其除磷效果就越好
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举一反三
【单选题】What does the woman Want the man to do?
A.
She wants the man to listen to the instructions and observe.
B.
She wants the man to watch white she performs the operations.
C.
She wants the man to ask questions so that she can help him.
D.
She wants the man to try to do it while she gives him instructions.
【单选题】Follow the instructions in this manual before attempting to use the appliance .
A.
Make sure that the equipment is regularly serviced.
B.
Do not connect the equipment before reading the instructions.
C.
Learn how to use the manual from the instructions
【单选题】阅读下面程序段class Student : Person{public override string ToString(){return ID + "\t" + Name;}static void Main(){Student s = new Student();s.ID = 1;s.Name = "JSON";PromptName(s);}}public class Person{publi...
A.
1 JSON
B.
Student
C.
Person
D.
出错，约束条件受限
【简答题】读程序,回答问题 class Student { int number; Student (){} Student (int no){ this.number=no; } Void setNumber(intNum) { number = Num; } voidshowNumber() { System.out.println(“My No. is :” + number); } } 写出这里定义...
【简答题】A．The customer didn't follow the instructions for using the item. B．The item was on clearance. C．The man no longer has the store receipt. D．It is beyond the returning duration.
【简答题】阅读下列问题描述和相应的程序,按下面给出的程序运行结果将程序补充完整。程序的运行结果如图所示。 请补全以下程序: class Person{ protected String name; protected char ; ( 1 ) { this.name=name; this.=; } String name(){ return name; } char (){ retu...
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