原水经钠型离子交换后,其碱度()。A、增大 B、减小 C、不变 D、为零

题型:单项选择题

问题:

原水经钠型离子交换后,其碱度()。

A、增大

B、减小

C、不变

D、为零

考点:化学水处理工化学水处理工(中级)化学水处理工(中级)题库
题型:单项选择题
阅读下面短文,根据内容完成表格中所缺信息。(每空一词) 
Writing a thank-you letter can be a great way to express (表达)thanks  for a favor (帮助;恩惠) someone did for you. Consider these following steps when writing your letter, which will help make your thank-you letter more meaningful (有意义的) and sincere(真诚的).
Before you start, buy some special stationery, such as nice paper or blank cards. The stationery doesn’t have to be expensive, since even one-dollar card can be very nice. And you must decide whether you prefer to type your letter or write it by yourself. Handwriting has a more personal feeling, while a printed(打印的) thank-you letter looks more professional (专业的).
Now, you can start writing. You should express your purpose(目的)  from the beginning. Start your letter by thanking the person for the gift or service he or she provided. Then you should explain how you plan to use the gift or service, or explain how the gift or service has already been used. What’s more, you can also express your feelings on the gift or service by saying that “It was a wonderful birthday present…” It also helps to mention a personal feeling such as “I was just so happy with the party.” In the end, you should mention that you want to see or talk to the person again soon. For close relatives and friends, you can also tell them how much you miss them and express regret(遗憾) that their visit was short.
Sign your thank-you letter personally and with a heart. Try “Love”, “Yours truly”, or “Take care” instead (代替) of “Sincerely” as it is more for business.
In this way, you will always maintain (维持) a pleasant relationship(关系) with your friends and relatives.
Title: How to Write a   小题1:  Letter
Purpose
To write a  小题2: and sincere letter to show your thanks.
Suggestions  (建议)
Before    小题3:  
Buy some stationery that is nice and  小题4:   .
Decide whether to type the letter or to write it by   小题5: .
The text of the letter:
At the beginning of the letter, 小题6: your thanks to the person providing the gift or service.
Introduce how the gift or service is   小题7:  for you.
Express your personal feelings about it if needed.
Mention that you are looking forward to their next  __小题8:   .
Signature:
“Sincerely” is not proper because it is usually used in  小题9: letters.
Result
Your relationship with others will stay   小题10:  .
题型:单项选择题
(1-
x
)8
展开式中不含x4项的系数的和为(  )
A.-1B.0C.1D.2
题型:单项选择题

世界上的三大宗教是______、______、______,其中信仰人数最多的是______.

题型:单项选择题

登录建行手机银行时,用()登录。

A、姓名

B、昵称

C、账号

D、身份证件号

题型:单项选择题

一消费者在食用当地一家颇有影响的食品企业所生产的食品时,发现食品中有异物,于是,他与该企业进行了交涉。企业接待人员同意研究后给予答复,但此后便没了下文。无奈之下,消费者把有异物的食品拿到当地一家颇有影响的报社,该报社遂派记者到企业进行现场采访。记者们在企业拍摄到许多违反国家食品生产规定的生产画面。企业负责人发现后强行索要记者所拍资料,未果后,将记者扣留,记者报案后,在公安人员解救下得以安全返回。事后,该报以系列报道的形式将消费者反映的问题以及记者在企业中所拍摄的资料、经历公诸于众,企业经营一时陷入困境。
问题:(1)该企业经营陷入困境的原因是什么
(2)如果你是该企业的负责人,你将如何处理此事

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