单体支柱工作面没有采取防倒柱设施的,属于采煤专业()隐患。 A.主要 B.重大 C.

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问题:

单体支柱工作面没有采取防倒柱设施的,属于采煤专业()隐患。

A.主要

B.重大

C.一般

考点:支架工应知应会支架工应知应会题库
题型:单项选择题
Will Smith is famous for his movies. He thinks it's  26  that people like his movies. The actor admitted that he was touched  27  by the warm welcome from his fans.
He said that he judged(评价) the   28  of the material by how it was liked by people. People worked hard to make a living and then on a Friday night they went to the   29 , and a lot of the time they   30  his movies over a lot of other movies. So he thought that was very ,very crazy.
Will— who made the most money in Hollywood in 2008 —    31   almost an hour talking to the thousands of exciting fans who came all the way to see him though it was a freezing cold day.
Huge letters, "W-I-L-L S-M-I-T-H", also made a deep  32  upon the married actor.
The "Men in Black" star was deeply moved and said, "Oh this is so fantastic.You see that? It's beautiful you know.  I told them I wanted my   33  40 metres high!"
In his new movie, Will    34  a man with a secret who starts out to set himself free by changing the   35  of seven strangers,but unexpectedly falls in love with one of them.
小题1:
A.funnyB.interesting C.crazyD.exciting
小题2:
A.proudlyB.greatlyC.happilyD.sadly
小题3:
A.qualityB.quantityC.sizeD.appearance
小题4:
A.partiesB.shopsC.restaurantsD.movies
小题5:
A.boughtB.wantedC.got D.chose
小题6:
A.costB.spentC.tookD.paid
小题7:
A.impressionB.decisionC.choiceD.difference
小题8:
A.photoB.movieC.fansD.name
小题9:
A.playsB.wakesC.doesD.becomes
小题10:
A.facesB.hopesC.livesD.Words
题型:单项选择题

A、B、C、D是四种可溶的化合物,分别由阳离子K+、Ba2+、Al3+、Fe3+和阴离子OH-、CO32-、NO3-

SO42-两两组合而成,它们的溶液发生如下反应:A与B反应生成白色沉淀,再加过量A,沉淀量减少,但不会完全消失。C与D反应生成有色沉淀。B与C反应生成白色沉淀。

写出它们的化学式:A:________,B:________,C:________,D:________。

题型:单项选择题

如图所示,用一根细线OB把电灯拉至图中位置,电线OA与天花板夹角为60º。若要使细线OB所受拉力最小,则细绳OB与OA的夹角应为

A.60º

B.30º

C.120º

D.90º

题型:单项选择题

在气-液色谱柱内,下列哪项是被测物质中各组分分离的依据()。

A.各组分在吸附剂上脱附能力的差异

B.各组分在吸附剂上吸附性能的差异

C.各组分在固定相中浓度的差异

D.各组分在固定液中的溶解度不同

E.各组分氧化还原能力的差异

题型:单项选择题

文书管理的基本原则是()

A.便于分类

B.便于保密

C.便于阅读和利用

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