在检修调试顺序控制系统时,若马达的控制回路已受电,则控制开关应打在()。A、试验位置

题型:单项选择题

问题:

在检修调试顺序控制系统时,若马达的控制回路已受电,则控制开关应打在()。

A、试验位置;

B、顺控位置;

C、手动位置;

D、无所谓。

考点:热工程控保护考试热工程控保护高级工热工程控保护高级工题库
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(2009·南京)下列各组离子在溶液中一定能大量共存的是(  )

A.H+、C1、OH

B.H+、SO42、HCO3

C.Ba2+、H+、SO42

D.Cu2+、C1、NO3

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下图为“某地生态农业循环模式示意图”。读图回答下列各题。

小题1:图中a、b、c分别表示

A.居住区、种植区、乳畜养殖区

B.居住区、乳畜养殖区、种植区

C.种植区、居住区、乳畜养殖区

D.乳畜养殖区、居住区、种植区小题2:下列最能体现出该模式特点的是

①循环型 ②高消耗 ③生态化 ④可持续

A.①②③

B.②③④

C.①②④

D.①③④

题型:单项选择题
I became lame (瘸的) in both legs in my childhood. I can’t stand  36  the support of two sticks. Only in my wheelchair can I “ 37 ” .
I still remembered the first day at 38 . When I appeared at the door,   39  in the classroom stared (凝视) at me in  40 . My face turned  41  . I couldn’t help  42   
back. It was the  43  and sympathy (同情) in their eyes that  44  me doing so. I went shyly towards an unoccupied (空的) seat.
Being lame, I didn’t dare to  45 in front of my classmates. I was afraid that I might be  46  at. In those days I was very sad to see others walking   47 .
One day, a few students came up to me and asked me to go outside. I was really   48  . They encouraged me with a(n)  49  smile and   50  me in my wheelchair from place to place. I was   51  to them for giving me a chance to see the   52  of our lovely school with my own eyes.
After that we often read, played and talked together. My friends are always   53   
to help me. It made me   54  I am handicapped (残疾的).
Once they asked me, “What is the most beautiful thing in our school?” Without hesitation (犹豫) I said, “ It is the   55 .”
小题1:
A.withB.withoutC.underD.on
小题2:
A.walkB.runC.sitD.stand
小题3:
A.schoolB.wheelchairC.homeD.hospital
小题4:
A.heB.sheC.everyone D.nobody
小题5:
A.thoughtB.interest C.anger D.surprise
小题6:
A.red B.brownC.white D.black
小题7:
A.enteringB.hidingC.comingD.turning
小题8:
A.feelingB.kindness C.sorrowD.pain
小题9:
A.madeB.preventedC.keptD.let
小题10:
A.walkB.studyC.practiceD.speak
小题11:
A.laughedB.smiledC.staredD.looked
小题12:
A.quicklyB.slowlyC.happilyD.shyly
小题13:
A.braveB.sadC.hurtD.excited
小题14:
A.honest B.friendly C.luckilyD.handsome
小题15:
A.pushed B.placedC.drewD.pull
小题16:
A.satisfiedB.sorryC.loyal D.grateful
小题17:
A.signsB.sightsC.buildings D.students
小题18:
A.readyB.smartC.wise D.unwilling
小题19:
A.forget B.remember C.imagineD.think
小题20:
A.teachersB.schoolyardC.classmatesD.friendship
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在行驶或作业中,除驾驶室外,装载机任何地方均禁止乘坐或站立人员。

题型:单项选择题

在森林生态系统及其影响范围内,森林对人类社会有益的全部效用是森林的()。

A.生态效益

B.经济效益

C.社会效益

D.综合效益

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