在装岩过程中，如遇耙斗受阻或负荷太大时怎么办？

CO₂焊接电源有直流和交流两种。( )

Europeans are being dug out from heavy snow after a week of very cold weather. The snowstorm is the harshest to hit Europe. Airports were shut down. And schools have been closed for a week.

Until Wednesday, at least 400 people across Europe had died because of the cold temperature. Several countries have said a state of emergency. In Ukraine, temperatures dropped as low as -33℉.

Although the situation is bad, at least one country is hoping the weather will last a little longer. In the Netherlands, the government is preparing for the country’s “11 Cities Tour”. The 125-mile ice-skating marathon will be held along a network which joins 11 towns and cities together in Friesland Province.

The ice along the way must be inches thick for the event. Up to 2 million people are thought to cheer on the race’s 16,000 competitors.

On Wednesday, Dutch soldiers joined in the preparations. They cleaned snow along the way. This will be the 16^th time that the event has taken place since the first race in 1909. Dutch General Hans said his soldiers were happy to lend a hand. “We want to do our bit for this national party.” he said.

小题1:What is “11 Cities Tour”?

A．It’s a 125-mile ice skating marathon.

B．It’s a 11-mile ice skating marathon.

C．It’s a 16000-mile ice skating marathon.

D．It’s a 33-mile ice skating marathon.小题2:Which of the following statements is TRUE according to the passage?

A．Thousands of people across Europe died because of the weather.

B．The ice should be less than 6 inches thick for the event.

C．No country is glad to see the cold weather.

D．The first “11 Cities Tour” began in 1909.小题3:Who helped clean snow along the way?

A．French soldiers

B．Dutch soldiers

C．Ukrainian soldiers

D．American soldiers小题4:The underlined word “harshest” means _______ in the passage.

A．safest

B．most enjoyable

C．most serious

D．happiest小题5:The passage is mainly about______.

A．the hard situation Europe faces

B．the European cold weather

C．preparations for a national party

D．the coldest season in Europe

主要Ig的特性和功能中，“分子量最大，称巨球蛋白”属于（）

A.IgG

B.IgM

C.IgA

D.IgD

E.IgE

Pentium的EFLAG寄存器的作用是 ( )

A．用于指示微处理器的状态并控制其操作

B．用于存放一些通用的数据

C．用于程序的调试

D．是程序不可见的寄存器

根据下列图形资料回答下列问题。

注：2007年我国国际旅游总人数为2610.97万人次，(外汇)收入为419.19亿美元。

2007年，我国入境旅游的前十大客源国按人数从多到少的顺序排列正确的是（）。

A．韩国、日本、俄罗斯、美国、菲律宾、马来西亚、新加坡、蒙古、泰国、澳大利亚

B．韩国、日本、俄罗斯、美国、马来西亚、新加坡、菲律宾、蒙古、泰国、澳大利亚

C．法国、德国、加拿大、英国、美国、泰国、蒙古、菲律宾、新加坡、马来西亚

D．韩国、日本、俄罗斯、美国、马来西亚、新加坡、菲律宾、澳大利亚、泰国、蒙古