在相同的钨棒直径的条件下，焊接电源的种类和极性对钨极许用电流值影响很大，能够使用较大

附加题（10分）(说明：这是高考1B考试中的06题，请根据上下文在空格中填上适当的词或括弧中单词的适当形式，每空1分)

No wonder that man in Munch’s The Scream is screaming. He keeps getting stolen. The famous painting went    1   in 1994 and again ten years later, both times from museums in Norway.    2  , security was extremely poor. Officials thought the painting was so famous that it wouldn’t be stolen. Wrong.

The world of art theft is not, as one might think, populated with intelligent persons who have a fine appreciation of art. Art thieves are thugs(流氓), according to a new book by Charley Hill. Hill was an undercover policeman    3   job was to track down stolen paintings. He says that the people who steal    4   were usually stealing wheels from cars a few years earlier. He describes priceless Vermeers being stuffed    5       the back of cars, Gainsboroughs being passed around by drug dealers with dirty hands and a nasty end to one of Henry Moore’s huge sculptures. The bronze, King and Queen, a    6   by Moore, was too heavy for the thieves to move, so they took out a chainsaw and cut off the heads, thinking those might be worth something.

The artworks usually turn up, sometimes many years    7  , though the police don’t always catch the thief. Even rarer is when a gentleman thief—one who steals art for personal pleasure only—is caught. In 2009, a waiter, Stephane from Switzerland, 32,    8        (find) guilty of stealing 69 artworks from museums since 1998. He told the court he did    9   for the love of art. His haul (赃物) was   10  over $1 billion—not bad for a waiter.

一号线地铁列车（）控制有网络和本地两种模式。

一般网络系统都具有的主要功能与特点是（）。

A、资源共享

B、均衡负载互相协作

C、分布处理

D、提高计算机的安全

E、提高资源的利用率

以下叙述中错误的是（ ）。

A． 一个工程可以包括多种类型的文件

B． Visual Basic应用程序既能以编译方式执行，也能以解释方式执行

C． 程序运行后，在内存中只能驻留一个窗体

D． 对于事件驱动型应用程序，每次运行时的执行顺序可以不一样

艾萨炉控制中，炉渣中的磁铁矿含量等于和超过（）时，不准操作艾萨炉。

A、9％

B、11％

C、13％

D、15％