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【判断题】
二甲基亚砜(DMSO)为常用溶剂,无毒。
A.
正确
B.
错误
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举一反三
【单选题】I am so tired. I don’t want to do ________ now.
A.
anyone
B.
anything
C.
something
D.
nothing
【多选题】活性污泥特性包括( )。
A.
强吸附能力
B.
强分解、氧化有机物能力
C.
较长食物链
D.
良好沉降性能,水与泥分离
【单选题】与普通活性污泥法相比,生物膜微生物的特点不包括( )。
A.
微生物更加多样化
B.
生物的食物链更长
C.
微生物世代时间更长
D.
剩余污泥的产量更高
【单选题】心脏自律细胞产生自律性的基础是:
A.
0期快速去极化
B.
无2期
C.
复极缓慢
D.
4期自动去极化
【多选题】与活性污泥法相比,生物膜处理法的特征包括( )。
A.
污泥产量高
B.
反应器容易堵塞
C.
含生长较慢的微生物
D.
易发生污泥膨胀
【单选题】-----I am tired of learning English all day long. ------So am I. ____________.
A.
Let’s find some of the action
B.
You must be joking
C.
Up to you
D.
It’s totally fascinating
【多选题】厌氧活性污泥的特征包括( )。
A.
呈灰色至黑色
B.
具有吸附降解能力
C.
絮状
D.
具有沉降性
【单选题】I am so tired now that I want to ___.
A.
turn in
B.
turn over
C.
turn up
D.
turn down
【单选题】I am afraid to sleep. I have been afraid to sleep for the last few weeks. I am so tired that, finally, I do sleep, but only for a few minutes. It is not a bad dream that wakes me it is the reality I t...
A.
The writer was not used to bargaining.
B.
People in Asia always bargain when buying things.
C.
Bargaining in Laos was quiet and peaceful.
D.
The writer was ready to bargain with the woman.
【单选题】I don’t feel like ______ anything now, for I am so tired.
A.
does
B.
to do
C.
did
D.
doing
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