要去除废水中含有的铜和镍离子,可以采用( )。A.浮选 B.氧化还原 C.活性炭吸

题型:多项选择题

问题:

要去除废水中含有的铜和镍离子,可以采用( )。

A.浮选

B.氧化还原

C.活性炭吸附

D.化学沉淀

E.离子交换

考点:环境影响评价工程师环境影响评价技术方法环境影响评价技术方法
题型:多项选择题

某加工企业质量攻关小组的选题是降低机器设备的故障次数,进行了以下活动。

为增加机器设备的可靠性,小组从技术、经济等不同角度讨论了各种对策,最后决定采取新的高可靠性的零件,本轮对策属于( )等类型。

A.去除原因

B.去除现象(结果)

C.去除因果关系

D.弱化因果关系

题型:多项选择题

灯泡的亮暗是由______的大小决定的,若加在它两端的电压不等于额定电压,灯泡就不能正常发光,它的______功率也就不等于它的额定功率.

题型:多项选择题

易燃介质中的气体或液体的蒸汽,需与空气混合形成爆炸混合物,其爆炸下限一般小于( )。

A.8%

B.10%

C.12%

D.20%

题型:多项选择题

In its more extreme forms persecution mania is a recognized

form of insanity. Some people imagine that others wish to kill

them, or imprison them, or to do them some other grave injury.

Often the wish to protect themselves from imaginary persecutors   (1)______

leads them into acts of violence which make it necessary to restrain

their liberty. This, like many other forms of insanity, is

only an exaggeration of tendency not at all uncommon among      (2)______

people who count as normal. I do not propose to discuss

the extreme forms, that are a matter for a psychiatrist.       (3)______

It is the milder forms that I wish to consider, since they      (4)______

are a very frequent cause of unhappiness, and because, not having

gone much far as to produce definite insanity, they          (5)______

are still capable of being dealt by the patient himself,       (6)______

provided he can be induced to diagnose his trouble

right and to see that its origin lies within himself and        (7)______

not in the supposed hostility and unkindness of others.        (8)______

We are all familiar with the type of person, man or woman,

who, according to his own account, is perpetually the victim

of ingratitude, unkindness, and treachery. People of such kind     (9)______

are often extraordinarily plausible, and secure warm sympathy

from those who have not known them long. There

is, as a rule, nothing inherently improbable about every separate    (10)______

story that they relate.

1()

题型:多项选择题

关于ABS系统,甲技师说:液压调节器装在制动主缸与制动轮缸之间;乙技师说:液压调节器装在制动轮缸上,用来调节轮缸油压。你认为()。

A、仅甲正确

B、仅乙正确

C、甲和乙都正确

D、甲和乙都不正确

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