配合剂DM在氯丁橡胶中可作()。A.促进剂; B.硫化剂; C.防焦剂; D.补强剂

题型:单项选择题

问题:

配合剂DM在氯丁橡胶中可作()。

A.促进剂;

B.硫化剂;

C.防焦剂;

D.补强剂。

考点:挤橡工考试挤橡工考试题库
题型:单项选择题

灯光开关在该位置时,后雾灯点亮。

题型:单项选择题

下图是一幅残缺的中国古代“地方机构示意图”,请依据留存信息,判断该图反映的朝代是

[ ]

A.唐代

B.宋代

C.元代

D.明代

题型:单项选择题

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

What is a big dream? (1)           Or, is a big dream something that provides only entertainment? Children dream big dreams, but there are three barriers to realizing dreams. They often kill them before they ever have a chance to grow.

The Self

Immediately following the birth of a big dream, a negative self-talk takes over and gives all the reasons why it cannot happen. This inside voice is the ego(自我). It’s there for protecting and should be listened to. (2)           Most people are influenced by the inside voice. That’s why only a handful of people make their dream come true.

(3)         

Family and friends are a lot like the ego. They want to protect those they love, so they will often list all the reasons why the big dreams won’t come true. Sometimes, family and friends destroy dreams of those they love most, out of their own fear of being left behind.

The World

If one gets past the first two barriers, one has to face the world. (4)           In the past, big dreamers were locked up and sometimes even killed when they were shown to the world. Fortunately, in most of the world today, big dreamers just get laughed at.

The way to realize a big dream is with confidence and action. When children have confidence and then take action, they will be ready to accept any failure. The truth is that every great dreamer whose dreams have never seen the light of success knows failure well. (5)          

A.Family and Friends

B.How Big Dreams Die

C.Does a big dream show one’s future?

D.They simply fail until they succeed.E.It is the last and the most terrible barrier.

F.Sometimes it is right, but more often it is wrong

G.And their big dream is to be a rock star or a famous artist.

题型:单项选择题

要鉴别氯化钡、硫酸铜、碳酸钠三种溶液,下列方法中可行而且最经济的是哪一项?()

A、分别加入硫酸钠溶液,再加入硫酸

B、分别加入硫酸

C、选择其中一种溶液,加入硝酸银溶液

D、选择其中两种溶液相互混合

题型:单项选择题

起吊重量较大的管件时,司索工应事先检查好吊具,并密切配合(),做好起吊安装工作。

A、搬运工

B、管工

C、电焊工

D、起重工

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