工业萘精馏塔顶回流液为（）。

Brighton: It is a seaside resort on the English Channel. Only 50 miles from London, it offers a good variety of lively entertainment. It is a cheerful place, busy and crowded in the summer, but alive in every season of the year. Its royal pavilion(布莱顿皇宫)is a masterpiece of English architecture.

Durham: Whatever travelers see or don't see in England, they must see this city, in the northeast, just south of Newcastle­upon­Tyne. No one will forget the sight of its cathedral(教堂)and castle rising together on a steep hill overlooking a loop in the River Wear, which almost surrounds them. The cathedral itself is one of the great medieval(中世纪的，公元476～1500)buildings in Europe.

Liverpool: A port in the northwest of England which possesses a quality that is not found in quite the same way anywhere else in England: the quality of grandeur (壮观). Liverpool has this grandeur in its site on the broad River Mersey (more than half a mile wide) with the houses rising near it; in its great dock buildings, its broad streets, and its two enormous cathedrals.

Edinburgh: It has long been the capital of Scotland. Edinburgh Castle is Edinburgh's important building, controlling the city from its perch on a rock over a hundred meters above sea level. Another important building is the Palace of Holyrood House, begun by James Ⅲ around 1500. Between the castle and the palace is the Royal Mile, which was the center of Edinburgh life before the 17th century and is fascinating to visit now.

小题1:Which is the suitable time to visit Brighton ?

A．Only summer

B．All the year around

C．Holidays

D．Weekdays小题2:Which of the following place mentions both a castle and a cathedral ?

A．Brighton

B．Durham

C．Liverpool0

D．Edinburgh小题3:From this article, which of the following statements is WRONG?

A．Around the broad River Mersey you can enjoy the unique quality of Liverpool .

B．The sight of Durham's cathedral and castle is probably best seen from the banks of the Riverwear .

C．The Palace of Holyrood House is much older than the cathedral in Durham.

D．Edinburgh Castle was built over a hundred meters above sea level.小题4:This article can be found in ________.

A．a travel magazine

B．a daily newspaper

C．a chapter of science fiction

D．a column in the financial press

如图所示，底面积为2×10^-2米²的圆柱形平底薄壁水槽放在水平地面上，一装有金属球的小盆漂浮在水槽的水面上，小盆的质量为1千克，金属球的质量为1.6千克，金属球的体积为0.2×10^-3米³．

①若把金属球从盆中拿出并放入水槽中后，小球沉入水底，求容器对水平地面压强的变化量．

②求水对水槽底部的压强变化量．

对VDI的描述中，正确的是哪些（）.

A.VDI是主流的桌面虚拟化架构

B.虚拟桌面运行在服务器端

C.VDI是联想自主研发的方案

D.服务器负责虚拟化运算和存储

E.终端负责显示和输入

局麻药的神经毒性（）

A.是接触性不良反应

B.是最严重的局部不良反应

C.与浓度过高有关

D.并非单纯药物本身引起

E.与直接注射神经内有关

在以下情况中，当事人可以解除买卖合同的有( )。

A．标的物主物不符合合同约定

B．标的物从物不符合合同约定

C．标的物为数物，其中一物不符合合同约定

D．分批交付标的物，其中一批标的物不符合合同约定

E．标的物的质量不符合合同约定