SMT电路板的组装工艺有两类最基本的工艺流程,一类是锡膏()工艺,另一类是贴片()工

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问题:

SMT电路板的组装工艺有两类最基本的工艺流程,一类是锡膏()工艺,另一类是贴片()工艺。在实际生产中,应根据所用元器件和生产设备的类型及产品的需求,选择单独进行或者重复、混合使用。

考点:电子与通信技术电子产品制造工艺电子产品制造工艺题库
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Symbol of friendship

Friendship is a wonderful thing to have no matter how old you are. However, it is important for teens and young adults to provide conversation, support and so much more as friends.    小题1:__  Actually, there are a few things that symbolize a friendly relationship.

 小题2: 

One of the symbols of a wonderful relationship between friends is easy conversation. When you can talk about almost anything, you are sure to be true friends. When the conversation flows easily from one topic to another, this can be a symbol of friendship as well.

Able to have fun 

 小题3:  No matter what you are doing, you can have a fun experience so long as you are with your friend. This is one of the best parts of friendship.

Support all the time

If your friends know they can call you anytime and you will be there for them, then this symbolizes friendship.

Attentive (专心的) listening by both individuals

If you find that you listen closely to what your friend says and they do the same for you, this is another symbol of friendship.   小题4: 

Share laughter and tears

Another symbol of friendship is the ability to share both laughter and tears. A friend is someone with whom you can laugh and cry over anything.   小题5: 

A.You feel comfortable with this person to share your special feelings.

B.Easy conversation

C.A true friend is someone you can have a great time with.

D.Teenagers always have difficulty in making friends.E. Get together

F. True friends listen closely to each other and understand what the other person is saying.

G. If you are trying to make friends, you may be wondering what symbolizes friendship.

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若在铁片上镀锌,以下叙述错误的是(   )

A.把铁片与电源的正极相连

B.电解质必须用含有锌离子的可溶性盐

C.锌极发生氧化反应

D.铁极的电极反应式为Zn2++2e-Zn

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要使对方在最短的时间内了解你的意图,你的提问应该()。

A.做好铺垫,避免漏洞

B.直接放入预见结果

C.内容简洁,中心突出

D.不给他人反问留有机会

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蓄电池电解液温度超过35℃时,其容量减少。( )

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必须在药品标签上印有规定标志的药品有

A.麻醉药品、精神药品、毒性药品、放射性药品、外用药品
B.麻醉药品、精神药品、毒性药品、放射性药品
C.麻醉药品、精神药品、毒性药品、放射性药品、处方药
D.麻醉药品、精神药品、毒性药品、放射性药品、外用药品、处方药
E.麻醉药品、精神药品、毒性药品、放射性药品、外用药品、非处方药

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