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规格8.480.1852923604R的内螺纹芯头，0.185代表什么含义，错误的是（)

A.生产产品齿高0.185mm

B.芯头槽底宽0.185mm

C.芯头名义齿槽深0.185mm

D.芯头长0.185Cm

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更多“ 规格8.48*0.185*29*23*60*4*R的内螺纹…”相关的问题

第1题

5G无线侧技术的3GPP协议主要在（）系列。

A.36系列

B.38系列

C.29系列

D.23系列

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第2题

若磁头的当前位置为100磁道（共200磁道），磁头正向磁道号增加方向移动。现有一磁盘读写请求队列：23、132、19、61、190、29、4、18、40。若采用先来先服务FCFS、最短寻道时间优先SSTF、扫描算法SCAN和C-SCAN，试计算出平均寻道长度各为多少？

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第3题

规格为“29U”的煤矿专用型钢中的“29”表示此种U型钢的每米重量近似值在29kg左右。此题为判断题(对，错)。

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第4题

Most boys, and many girls too, have at some time or other started a stamp collection. Stam

p-collecting, or, to call it【21】its correct name, philately,【22】an increasing popular hobby from as【23】as 1854 -- for less than two decades (十年) after postage stamps【24】. Today the hobby numbers【25】are not only boys and girls, but also men and women from all ranks (阶层) in society. So rapidly【26】the interest in stamp-collecting increase in the United States of America【27】in 1921 the United States Post Office found itself【28】set up a special department to【29】the needs of collectors. At present the yearly【30】of this department total over three hundred thousand dollars.

(41)

A．by

B．in

C．for

D．with

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第5题

John woke up in the middle of the night and saw something white【21】his garden. It seemed【2

2】towards the house.

"That【23】a thief !" he thought, and he took his gun and shot【24】him. Then he went back to bed,【25】he was too frightened【26】of the house in the dark.

The next morning John went out and saw one【27】his white shirts hanging【28】the clothes line in the garden. His wife【29】washed it the day before and【30】it out to dry. Now it had a bullet hole right through the middle of it.

"My God," said John, "I was lucky last night. If I had been wearing that shirt, the bullet would have killed me!"

(46)

A．at

B．in

C．above

D．of

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第6题

What is （21) that a teacher most wants in his students？ Attentiveness？ A good memory？ Dili

What is (21) that a teacher most wants in his students？ Attentiveness？ A good memory？ Diligence？ Certainly these are the qualities commonly (22) with "good students" in the (23) mind. And certainly, too, these are the qualities that most (24) to teachers' comfort.

But the best students I ever had, (25) I remember the most wistfully, was a talkative, lazy day-dreamer. Sometimes he turned assignments in (26) , and a few he never (27) around to doing at all. Actually, my admiration for him was ironic, (28) I have never liked the name Ronald, (29) suggests to me the assumed name of a movie star. But he made one whole year of my (30) experience a delight.

21.

A. there

B. they

C. it

D. that

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第7题

Parents and teenagers often disagree about the amount of freedom and responsibility that y

oung people are to have. The teenager often wants to be【21】to choose his own friends, select his own courses in school, plan for his own vocational【22】, and earn and spend his own money, and generally【23】his own life in a more independent fashion than .many parents are able to【24】.

Most problems between teenagers and their parents yield best to (导致) joint planning and decision making. Within any particular family【25】are avoided and problems are solved when all of the persons take【26】in the situation,【27】in working it out.【28】parents and young people learn how to get【29】well with each other and develop skills in understanding and【30】understood, even the most difficult problems are relieved.

(36)

A．free

B．likely

C．able

D．curious

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第8题

Mr. Brown is 102 years old. He is leading a full and active life. Why has he【21】so long？ M

any【22】would like to know the answer to the question. They are studying groups of old people all over the world and try to find why some very old people remain healthy【23】and spirit (精神) while【24】be come weak and iii in their 60s. They have observed, first of all, that doing【25】work is a way of life for all these long-lived people. They began their long days of physical labor【26】children and never seem to stop. Second, all these people come from【27】. The air has【28】oxygen (氧) and is pollution free,【29】makes the hearts stronger. Third, these people eat little animal meat. They like to have fresh vegetables, nuts (坚果) , grains, and【30】They never eat more food than their bodies need.

(46)

A．been

B．worked

C．stayed

D．lived

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第9题

It was Sunday. The trains were crowded. A gentleman was walking along the platform【21】a pl

ace. In one of【22】he saw a vacant seat. But a small suitcase was【23】on it and a stout gentleman was sitting next to it. "Is this seat vacant？" asked the gentleman. "No, it is my【24】" answered the stout gentleman. He is just coming. This is his suitcase. "Well," said the gentleman, "I will sit here till he【25】. "Five minutes later, the train started,【26】nobody came. "Your friend is late, "said the gentleman," He【27】his train, but he need not【28】suitcase. "And【29】these words he【30】the case and threw it out of the window. The stout gentleman jumped up to catch the case but it was too late. He regretted taking two seats for his own comfort.

(46)

A．looking for

B．and looked

C．look for

D．looked

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第10题

In order to learn a foreing language well, it is necessary to overcome the fear of making

【21】If the primary goal of language use is communication, the mistakes are 【22】consideration that may be dealt 【23】gradually as awareness of those mistakes increases. On 【24】, students should not 【25】their mistakes. The learner may observe how native speakers express themselves, and how 【26】expressions differ from the way the learner might say them. For example, a Spanish speaker who 【27】"I do it. "to express willingness to do something in the immediate future, could, by inter- acting(相互作用) 【28】native speakers of English, observe that native speakers actually say "I'11 do it". The resulting discrepancy(不同)can serve as a basis for the student to modify (个性)his way of using the present tense in English. But a student who is unwilling to interact 【29】the first place would lose this opportunity to learn by 【30】and error.

(36)

A．mistakes

B．flaws

C．errors

D．wrongs

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