煤岩显微组分包括()。A、镜质组 B、稳定组(壳质组) C、丝质组(惰质组) D、矿物

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问题:

煤岩显微组分包括()。

A、镜质组

B、稳定组(壳质组)

C、丝质组(惰质组)

D、矿物

考点:炼铁工考试高炉炼铁工高炉炼铁工题库
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甲乙两车在一平直道路上同向运动,其v-t图象如右图所示,图中△OPQ和△OQT的面积分别为x1和x2(x2>x1),初始时,甲车在乙车前方x0处  (   )

 

A.若x0=x1+x2,两车能相遇

B.若x0<x1,两车相遇2次

C.若x0=x1,两车相遇1次

D.若x0=x2,两车相遇1次

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Comparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 16th centuries. Yet much had happened (91) . As was discussed before, it was not (92) the 19th century that the newspaper became the dominant pree-leetronie (93) , following in the wake of the pamphlet and the book and in the (94) of the periodical. It was during the same time that the communications revolution (95) up, beginning with transport, the railway, and leading (96) through the telegraph, the telephone, radio, and motion pictures (97) the 20th-eentury world of the motor ear and the airplane. Not everyone sees that process in (98) . It is important to do so.
It is generally recognized, (99) , that the introduction of the computer in the early 20th century, (100) by the invention of the integrated circuit during the 1960s, radically changed the process, (101) its impact on the media was not immediately (102) . As time went by, computers became smaller and more powerful, and they became "personal" too, as well as (103) , with display becoming sharper and storage (104) increasing. They were thought of, like people, (105) generations, with the distance between generations much (106)
It was within the computer age that the term" information society" began to be widely used to describe the (107) within which we now live. The communications revolution has (108) both work and leisure and how we think and feel both about place and time, but there have been (109) views about its economic, political, social and cultural implications. "Benefits" have been weighed (110) "harmful" outcomes. And generalizations have proved difficult.

A.gathered

B.speeded

C.worked

D.picked

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根据《锅炉压力容器焊工考试规则》的规定,埋弧焊单面焊试件的未焊透应在外观检查时评定。()

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下列史实发生在汉朝的是(  )

A.“文景之治”

B.“开皇之治”

C.“贞观之治”

D.“开元盛世”

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小说《基督山伯爵》的作者是小仲马的父亲()。

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