在国家标准所规定的球墨铸铁牌号中,QT40—17和QT42—10二种牌号球墨铸铁属于

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问题:

在国家标准所规定的球墨铸铁牌号中,QT40—17和QT42—10二种牌号球墨铸铁属于()球墨铸铁。

考点:冶金工业技能鉴定考试初级铸管工考试初级铸管工考试题库
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My friend Mr. Smith is a famous doctor and has a hospital. So he has enough money to __11__ all over the world. And he’s been to a lot places of interest. He likes to __12__ children and has a lot of little __13__. They often ask him to tell them all kinds of funny things he __14__. It makes them happy and his room is always full __15__ children when he’s free.
It was my little son’s seventh birthday yesterday. The boy wanted to __16__ his old friend Mr. Smith to the party. He __17__ Mr. Smith himself and told him about it. the doctor accepted his __18__ happily. At half past seven the boy was waiting for his coming at the gate. __19__he saw his car, he ran towards him. Mr. Smith __20__ on time, with a nice present in his hand. After dinner the children sat around the traveler and asked him to __21__ them some funny stories. Mr. Smith agreed and his stories made them __22__ again and again. At last th told them the funniest story. He said, “ Once I reached a city __23__a foggy day. The fog was the thickest in the world …”
Please wait a__24__, Mr. Smith,” said my son, “ It’s said the fog in London is the thickest in the world.”
“You’re __25__, my clever boy.” Said the funny doctor. “ The city had much fog that day …”“ What’s it, the?” the boy couldn’t wait to ask again.
“ The fog was so thick that I couldn’t see it at all,” the funny doctor said with a smile.
小题1:
A.workB.fightC.liveD.travel
小题2:
A.wait forB.look overC.play withD.look after
小题3:
A.friendsB.brothersC.workersD.classmates
小题4:
A.readB.wroteC.thoughtD.saw.
小题5:
A.withB.forC.ofD.by
小题6:
A.sendB.askC.carryD.get
小题7:
A.knewB.caughtC.taughtD. called
小题8:
A.invitationB.thingsC.carD.money
小题9:
A.BeforeB.As soon asC.UntilD.Since
小题10:
A.cameB.answeredC.saidD.played
小题11:
A.speakB.sayC.tellD.talk
小题12:
A.thinkB.laughC.cryD.fear
小题13:
A.withB.inC.atD. on
小题14:
A.momentB.dayC.weekD.year
小题15:
A.sorryB.sadC.wrongD.right
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已知反应:①Fe(s)+CO2(g)FeO(s)+CO(g) △H=a kJ·mol-1;②Fe(s)+H2O(g)FeO(s)+H2(g) △H=b kJ·mol-1。以上两个反应的平衡常数分别为K1和K2,在不同温度下,K1、K2的值如下表

下列有关叙述中正确的是 [ ]

A.b>0

B.在973 K下增大压强,K2增大

C.反应②是放热反应

D.在常温下反应①一定能自发进行

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( )黑客经常被人所雇佣,闯入他人计算机系统窃取有用信息为自己获利。

A.白帽黑客

B.黑帽黑客

C.计算机窃贼

D.脚本兔

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何病证发作过后,无任何异常症状、体征

A.厥病

B.癫狂

C.痴呆

D.郁证

E.痫病

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社区护士开展社区护理的重要工具是

A.家庭评估

B.家庭访视

C.家庭评价

D.社区评估

E.社区诊断

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