搜题请搜索小程序“爱下问搜题”
问题 单项选择题

在食品工业、化工、造纸工业废水处理中有许多成功的UASB。其典型的设计负荷是（）kgCOD/(m3•d)。

A.3～15

B.4～l5

C.3～20

D.4～20

答案

参考答案：B

填空题

单词填空。

1. By 1881, the population of Ireland had ________ (减少) to 5.2 million.

2. China is getting more and more ________ (强大) in the world.

3. It is not allowed to _________ (打猎) wild animals in this area.

4. The climate ________ (影响) the amount of the rainfall last year.

5. A tiger is a very ________ (凶猛的) kind of animal. However, it won't attack you

   if you don't.

6. People say that barking dogs don't b________.

7. I'd a________ it if you let me get on with my job.
查看答案
单项选择题

皮张炭疽检验常用的方法是( )。

A．絮状沉淀试验

B．环状沉淀试验

C．对流免疫电泳试验

D．中和试验

E．补体溶血试验
查看答案