室内排水系统的分项工程包括()。 A.给水管道及配件安装 B.排水管道及配件安装 C

题型:多项选择题

问题:

室内排水系统的分项工程包括()。

A.给水管道及配件安装

B.排水管道及配件安装

C.雨水管道及配件安装

D.管道防腐和绝热

考点:施工员专业基础知识专业基础知识题库
题型:多项选择题

如图所示伏安法测量未知电阻Rx的实验.

(1)请用笔画线代替导线完成实物连接,根据实物在框内画出电路图.

(2)在闭合开关前,应将滑动变阻器滑片P滑到_________(根据上面实物图作答)

(3)在某次实验时,电流表和电压表示数如图所示,其电流表示数为_________A,电压表示数为_________V,则该电阻的阻值为_________Ω.

(4)小刚连接完最后一根导线后就发现两个表的指针发生偏转,并且指针总在晃动,造成上述现象的原因分别是 _________ _________

(5)用电流表和电压表测量电阻的实验电路,如图所示.为了减小误差,需要进行三次测量求平均值.请你设计一个记录数据的表格.

(6)小彤同学实验时不小心将电压表损坏了、现在实验室有:电流表、滑动变阻器(阻值0~R0)、导线若干、未知电阻Rx.请设计实验完成测量未知电阻Rx的实验.经讨论后同学们达成共识,设计的电路如下图,以下是他们的实验操作步骤:

①按电路图连接好实物电路.

_________

_________

未知电阻Rx的数学表达式:Rx= _________

题型:多项选择题

(10分)糕点疏松剂的主要成分中含有碳酸氢钠,某化学兴趣小组对碳酸氢钠的化学性质进行探究.

【探究实验一】碳酸氢钠溶液的酸碱性:用pH试纸测得碳酸氢钠溶液的pH约为10,由此得出结论是碳酸氢钠溶液呈  

【探究实验二】碳酸氢钠能否与酸反应:取少量固体放入试管中,滴加足量的稀盐酸,现象为  .结论:碳酸氢钠能与酸反应.

【探究实验三】碳酸氢钠的热稳定性:取一定量的碳酸氢钠放在铜片上加热,如图所示.

(1)加热一段时间后,观察到烧杯内壁有水珠.

(2)充分加热后,将烧杯迅速倒转过来,加入适量的澄清石灰水,振荡,观察到石灰水变浑浊.

(3)通过进一步实验来确定充分加热后的固体产物的成分.限选试剂及仪器:稀盐酸、氯化钙溶液、澄清石灰水、酚酞溶液、蒸馏水、试管、胶头滴管

序号实验操作预期现象结论
 ① 取少量加热后的固体产物放入试管A中,加入适量蒸馏水,充分振荡溶解,滴加足量

 氯化钙 ,振荡,静置

 产生白色沉淀产物含Na2CO3
 ② 取操作①后的上层清液于试管B中,滴加

     

 

              

 产物不含NaOH
(4)根据上述实验结论,写出碳酸氢钠受热分解的化学方程式                                 

题型:多项选择题

阅读理解

     Much as Robby tried, he lacked the sense of tone and basic rhythm (节奏). But he dutifully reviewed

his lessons. Over the months he tried and tried, and often repeated to me "My mom's going to hear me

play some day."

    But he seemed hopeless, with no born ability. A real bad advertisement for my teaching! I was so

happy when one day he stopped coming.

    Several weeks later my students were to have a recital (演奏会). To my surprise, Robby came, asking

to play in the recital.

     "But, it is for current pupils; you dropped."

     "My mom was sick. But I have been practicing. I've just got to play!"

    I didn't know what led me to agree, maybe...

    The recital came. I__put__Robby__up__last__to__play__before__my__"curtain__closer", by which,

I could save the recital if...

    The recital went on well.  Robby came up on stage, clothes wrinkled and his hair looked like he'd run

an eggbeater through it. "How could his mom...?"

     Robby pulled out the piano bench and began. It was Mozart's work! I was not prepared for what I

heard next. Like in a dream, I was then woken up by the wild applause-everybody was on their feet!

     "I've never heard you play like that, Robby! How'd you do it?"

    Through the microphone Robby explained: "Well, Miss Hondorf, remember I told you my mom was

sick? Actually she had cancer and died this morning. She was born deaf, and tonight was the first time

she ever heard me play. I wanted to make it special."

     My eyes were wet. He was not a student of mine, but a teacher!

1. We can infer from the underlined sentence that the writer ________.

A. was fully confident that Robby would perform well in the recital

B. thought that Robby would make the recital special

C. thought that Robby wouldn't play in the recital

D. had no confidence in Robby at all in the recital

2. What made the boy succeed in the recital?

A. Love for his mother.    

B. Musical talent.

C. The writer's help.      

D. Regular practice.

3. What made the writer think that Robby was her teacher, not a student?

A. That he played better than her in the recital.

B. That he loved his mother more than she did.

C. That he never gave up.

D. That the audience gave him more applause than her.

4. What is the highlight of the recital?

A  The writer's performance.

B. Robby's performance.

C. Robby and his mom's story.

D. The audience's applause.

题型:多项选择题

阅读下列材料:

材料一:1949年我国私营工商业在国民经济中的地位

材料二:1956年我国国民经济中公私经济的地位

材料三:1989年我国国民经济中公私经济的地位

请回答:

(1)材料一反映了什么经济现象?

________________________________________________________________________________

(2)材料二反映了1956年我国所有制经济成分有何变化?造成这种变化的原因是什么?这种变化产生的最主要影响是什么?

________________________________________________________________________________

(3)对照材料二,指出材料三中我国的所有制经济成分又有什么变化?引起这种变化的原因有哪些?

________________________________________________________________________________

(4)建国后我国所有制经济成分的变化情况说明了什么?

________________________________________________________________________________

题型:多项选择题


案情:天津市中级人民法院一审以走私、贩卖毒品罪判处甲和乙死刑、剥夺政治权利终身。甲不服,认为自己是胁从犯提出上诉,天津市高级人民法院经开庭审理,改判甲死刑,缓期二年执行。天津市人民检察院分院认为天津市高级人民法院对该案的改判确有错误。最后此案经依法提出抗诉,由天津市高级人民法院重新审判,撤销原判,裁定维持原一审判决,并已依法执行两人死刑。
问题:

如果甲在被执行死刑时揭发一重大抢劫案犯罪嫌疑人的,最高人民法院裁定停止执行后,经查清确有其事的,甲构成重大立功,最高人民法院应当如何处理

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