生产和储存火灾危险性为甲类的气体,其爆炸下限为() A.≤10% B.≥10% C.

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问题:

生产和储存火灾危险性为甲类的气体,其爆炸下限为()

A.≤10%

B.≥10%

C.<10%

D.>10%

考点:一级消防工程师第一章燃烧基础知识第一章燃烧基础知识题库
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If you don’t ______ your smoking , I will _______ your money supply .

A.cut up , cut down

B.cut down, cut off

C.cut in , cut off

D.cut in , cut up

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There was a time when I thought my dad didn’t know a thing about being a good father. I couldn’t   36  him ever saying the words “I love you.” It seems to me his only purpose in life was to say “  37  ” to anywhere I wanted to go and anything I wanted to do, including getting a   38 . Some parents bought their kids cars when they got their driver’s licenses. Not my dad ---- he said that I’d have to get a job and buy my own.
So that is what I did. I got a job at a very nice restaurant and   39  every penny I could and   40  I had enough to buy my car, I did! The day I brought that car home, my dad was the first one I wanted to   41  to. “Look, dad, a car of my own. If you ever want a ride, I’ll only   42 you five dollars.” I offered with a smile.
“I see,” was all he said.
One day, there was something wrong with my father’s truck. So he needed a   43  to work. The sun wasn’t even up when we left the house ,   44  it was already getting warm out. It was going to be a(n)   45  day. As I dropped my dad off, I   46  him, dressed in his work clothes, getting his   47  from the truck (车尾箱) of my car. Watching his sun-weathered face, and even from a distance I could tell there were   48  lines than I ever remembered being there before. I realized how hard my dad works for the family. My father is a cement finisher(水泥修整工).
In that instant, it  49  to me that he actually got down on his hands and knees to sweat over hot concrete to make a living for his family. And he did this day in and day out,   50  hot it got. Never, not once, had I hear him   51  about it. To him we were “worth” it. And never once did he “charge” us for it.
When he closed the trunk, his tools set off to the side, he walked over to my window to   52  me five dollars. I rolled down the window and said “Good-bye, dad. Keep your five dollars. It’s my   53 . Don’t work too hard. I love you.”
His   54  met mine, then glanced away in the direction of his waiting tools, he   55  his throat and said, “Oh, and… me, too.”
小题1:
A.likeB.rememberC.forgetD.care
小题2:
A.SorryB.YesC.NoD.Well
小题3:
A.carB.friendC.jobD.present
小题4:
A.spentB.earnedC.keptD.saved
小题5:
A.whenB.ifC.because D.though
小题6:
A.pay it backB.hand it overC.turn it upD.show it off
小题7:
A.payB.chargeC.offerD.provide
小题8:
A.rideB.leaveC.tripD.hurry
小题9:
A.asB.althoughC.butD.since
小题10:
A.ordinaryB.hotC.workD.special
小题11:
A.helpedB.followedC.leftD.watched
小题12:
A.toolsB.clothesC.luggage D.bag
小题13:
A.fewerB.moreC.longerD.deeper
小题14:
A.happenedB.seemedC.occurredD.appeared
小题15:
A.whateverB.wheneverC.whereverD.however
小题16:
A.talkB.complainC.askD.speak
小题17:
A.handB.passC.lendD.take
小题18:
A.helpB.adviceC.treat D.reply
小题19:
A.handsB.smileC.voice D.eyes
小题20:
A.cleanedB.wipedC.clearedD.felt
题型:单项选择题

什么是面角,如何理解面角恒等定律?

题型:单项选择题

下列哪一条属于关系数据库的规范化理论要解决的问题?()

A.如何构造合适的数据库逻辑结构

B.如何构造合适的数据库物理结构

C.如何构造合适的应用程序界面

D.如何控制不同用户的数据操作权限

题型:单项选择题

十二指肠溃疡最易合并下列哪项并发症

A.上消化道出血

B.穿孔

C.恶性变

D.复合性溃疡

E.幽门梗阻

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