如何检查盲巷瓦斯和二氧化碳浓度?

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问题:

如何检查盲巷瓦斯和二氧化碳浓度?

考点:煤矿应知应会煤矿安全生产应知应会煤矿安全生产应知应会题库
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将分别盛有100 mL的KCl溶液、NaNO3溶液、CuSO4溶液的三个电解槽(电极均为惰性电极)依次串联,通直流电进行电解,当某极析出0.32 g Cu后,假定各溶液在电解前后的体积未变,则这时三个电解槽中溶液的pH分别是

A.13,7,1

B.12,7,2

C.1,7,13

D.7,7,7

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乳香的药用部位为

A.胶树脂

B.单树脂

C.油胶树脂

D.油树脂

E.香树脂

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Dear Cassy,

Thanks for reminding me by e-mail that you want to baby-sit our children. Although you are only 12 years old, my wife and I would be willing to consider your application(申请)if you can meet(满足) a few requirements:

1)Send us three letters from teachers who will prove that you have never failed to follow instructions perfectly in class and never failed to hand in your homework on time.

2)Send us a note from two doctors who will prove that you are in perfect health, have never been sick, and never will be sick.

3)Send us a document from your physical education teacher or team coach that proves that you can do each of the following: Run two miles in less than four minutes, climb an oiled rope to a height of twenty feet in thirty seconds while balancing a glass of water on your nose, and walk in bare feet over hot coals and broken glass without injury.

4)Send us notarized(得到公证的)letters from at least two mental health experts saying that you have never had an envious thought towards other people.

5)Play and defeat five expert chess players while blindfolded(蒙着眼睛)after going without sleep for 48 hours.

6)Wait patiently(耐心地)for two years while we have investigators(调查)certify(确保)that all your documents(文件)are real.

Your loving and trusting friends,

The Smiths

小题1:The Smiths send their message to Cassy by     .

A.e-mail

B.a letter

C.a newspaper

D.a report小题2:According to the first paragraph,       .

A.the Smiths must have had an advertisement made, saying that they want someone to look after their children

B.the Smiths have informed Cassy that they need some children

C.the Smiths have promised to provide what Cassy asked for

D.the Smiths would be very glad if Cassy can meet their requirements小题3:What is the attitude of the Smiths about hiring the 12-year old girl to look after their baby?

A.The Smiths try to tell her how to baby-sit children.

B.The Smiths don’t think a girl is good for the job.

C.The Smiths don’t want to hire her.

D.The Smiths are willing to offer her the job.小题4:Which of the requirements mentioned by the Smiths do you think Cassy can meet?

A.All of them

B.Half of them

C.None of them

D.Most of them

题型:问答题 简答题

使用同态滤波方法进行图像增强时,不包含以下哪个过程().

A、通过对图像取对数,将图像模型中的入射分量与反射分量的乘积项分开。

B、将对数图像通过傅里叶变换变到频域,在频域选择合适的滤波函数,进行减弱低频和加强高频的滤波。C、计算图像中各个灰度值的累计分布概率。

D、对滤波结果进行傅里叶逆变换和对数逆运算。

题型:问答题 简答题

诊断系统性红斑狼疮常用而有价值的病理检查是()

A.肾穿刺

B.骨髓穿刺

C.肺穿刺

D.淋巴结活检

E.皮肤狼疮带试验

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