简述划分加工阶段的主要目的。

题型:问答题

问题:

简述划分加工阶段的主要目的。

考点:自学考试工学自考机械制造自考题
题型:问答题

Food may help you understand more about yourself. Choose your favourite food from the five below. See the answers. Does your choice really tell you who you are ?

A. noodles with beef (the hotter, the better );

B. big dinner with all kinds of dishes;

C. pizza;

D. fried chicken;

E. cakes.

Answer :

A. You always try to make yourself different others. Success and fame are your only interests.

B. You finish things quickly and don’t like changing your ideas. You’re never afraid of hard work. But you always buy lots of things that you don’t need.

C. You work hard and always save money. But sometimes you aren’t kind to others and always think you are right.

D. Exercise is not your favourite thing. You don’t like staying by yourself very much. People think that you’re shy but sweet.

E. Because you are nice and easy-going, you have lots of friends. You are always ready to help others.

小题1:The passage is probably a/an _________ .

A.news report

B.science discovery

C.personality test

D.interesting story小题2: According to the passage, a person who has a lot of friends may choose _______ .

A.noodles with beef

B.fried chicken

C.big dinner with all kinds of dishes

D.cakes小题3:Who will works hard, but always wastes money according to the passage ?

A.the man who chooses pizza

B.the man who chooses cakes

C.the man who chooses noodles with beef

D.the man who chooses a big dinner with all kinds of dishes

题型:问答题

冲裁模试冲时,出现剪切断面的光亮带太宽,甚至出现双亮带及毛刺其原因是()。

A、冲裁间隙合理

B、冲裁间隙太大

C、冲裁间隙太小

D、冲裁间隙不均匀

题型:问答题

人体患有夜盲症,可能是食物中缺乏( )

A.维生素A

B.维生素B

C.维生素C

D.维生素D

题型:问答题

下列物质属于氮的氧化物的是

A.HNO3

B.NO2

C.NO

D.NH3

题型:问答题

二次回路的定义和分类是什么?

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