钢结构采用螺栓连接时,常用的连接形式主要有()。 A.平接连接 B.搭接连接 C.T

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问题:

钢结构采用螺栓连接时,常用的连接形式主要有()。

A.平接连接

B.搭接连接

C.T形连接

D.Y形连接

E.X形连接

考点:质量员质量员专业基础知识质量员专业基础知识题库
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如图,小球a、b质量均为m,b球用长h的细绳(承受最大拉力为2.8mg)悬挂于水平轨道BC(距地高0.5h)的出口C处.a球从距BC高h的A处由静止释放后,沿ABC光滑轨道滑下,在C处与b球正碰并与b粘在一起.试问:

(1)a与b球碰前瞬间的速度大小?

(2)a、b两球碰后,细绳是否会断裂?

(3)若细绳断裂,小球在DE水平地面上的落点距C的水平距离是多少?若细绳不断裂,小球最高将摆多高?

题型:多项选择题

现行脚手板存在着一定的问题和不足,下列哪些说明了这一点()。

A、采用横向铺设。

B、脚手板国家成整体并与脚手架横杆相连。

C、采用7~9层抗磨胶合板材制作的钢锭型脚手板。

D、采用纵向铺设。

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Published in 1896 and one of the most memorable horror stories ever written, Dracula, by Irish writer Bram Stoker,is the story of a vampire(吸血鬼),someone who lives on human blood. Stoker wrote the book after reading stories about Central European vampires and set his novel in Transylvania. Even today,there are readers of the book who believe that Transylvania is a mythical(神话的)country,a figment(虚构)of Stoker’s imagination. Nothing could be further from the truth. Transylvania is part of modern-day Central European country Romania,and the country does indeed have a history of mythological vampires.

However,Romanians are always puzzled by the description of the novel’s central character, Count Dracula,a tall,elegant aristocrat(贵族)with impeccable(完美的)manners who also happens to speak very good English. This is a world away from the images of vampires that they have grown up with. Romanian vampires are half-human creatures who live solitary lives in the forests,not aristocrats living in castles with well-stocked libraries.

So where did Stoke get the image for his Dracula? The answer becomes clearer when one learns of his relationship with a man called Henry Irving,the greatest British stage actor of his time.

Stoker was working as a civil servant in his home city of Dublin when he first met Irving. Bored with his tedious life and work, Stoker took every opportunity to visit the theatre and for a while was the drama critic for the Dublin Evening Mail. One of the reviews he wrote was of a performance of Shakespeare’s play Hamlet,with Irving in the lead role.

Irving was so pleased with Stoker’s review of his performance that he asked to meet him. Stoker couldn’t believe his luck when one night,he was invited to a dinner party where Irving was the guest of honour. Irving entertained the assembled dinner guests with some renditions(表演)of famous poems and speeches from Shakespeare.

Stoker was already writing the first chapters of Dracula and began to base the central character on Irving,in the vain hope that if it ever became a stage play, Irving would play the central character. Sadly,Irving never did,but the two men became close friends,and in 1878 Stoker left the civil service and became Irving’s manager in London.

小题1:Bram Stoker set his novel in Transylvania because       .

A.it is in modern-day Romania

B.Transylvania is a mythical country

C.he wanted to tell a true story

D.he had read stories about vampires from the area小题2:The central character of the novel       .

A.is very similar to the vampires that Romanians know about

B.Is completely different from the vampires Romanians know about

C.Has impeccable manners,like a real Romanian vampire

D.Is puzzled by the comparison with Romanian vampires小题3:What was Stoker’s hope?

A.That the book would become a stage-play.

B.That Irving would play the central character in the stage play.

C.That he could live in London.

D.That Irving would work for him.

题型:多项选择题

急性胰腺炎胰酶被激活的主要原因包括()

A.先天性胰蛋白酶原含量增高

B.病毒在胰管上皮内复制,破坏胰管结构

C.胰液分泌亢进使胰管内压升高

D.十二指肠壶腹部的阻塞引起胆汁反流

E.十二指肠液反流

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根据《水法》规定,在河道管理范围内铺设跨河管道、电缆属于( )

A.禁止性规定
B.非禁止性规定
C.限制性规定
D.非限制性规定

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