科研方法中的现代方法包括（）等。 A.系统论 B.控制论 C.耗散结构论 D.协同论

Modern life is impossible without traveling. The fastest way of traveling is by plane. With a modern plane you can travel to lots of places in one day.

Traveling by train is slower than by plane. But you can see beautiful countryside when you are traveling by train. Modern trains give comfortable seats and dining cars. They make the journey(旅途) interesting.

Some people like to travel by sea. There are large liners and river boats. You can visit many other countries and different parts of your country on them. Ships are not so fast as trains or planes, but traveling by sea is a very nice way to spend a holiday.

Many people like to travel by car. You can make your plan. You can travel three or four hundred miles or only fifty or one hundred miles a day, just as you like. You can stop whenever you wish to see something interesting. If you find a good place to have meals you can stop, too. That is why traveling by car is popular, while people usually take a train or a plane when they travel on business.

小题1:The fastest way of traveling is ________from this passage.

A．by train

B．by sea

C．by plane

D．by car小题2:The advantage(优点) of traveling by train is that _________.

A．you can see the countryside

B．it is faster than traveling by ship

C．you can get to a place which it took years to get to before

D．it is cheap小题3:The underlined word “They” in the passage means _________.

A．modern trains in the country

B．comfortable seats and dining cars

C．people who travel by train

D．the slower ways of traveling小题4: People would like to go picnic with their family by _________.

A．car

B．plane

C．train

D．ship小题5:The best way for business should be _________in the passage.

A．planes

B．cars

C．trains and planes

D．ships

下列属于物理变化的是（　　）

A．石油蒸馏

B．铁生锈

C．煤干馏

D．食物腐败

举例说明泵型号中字符数字代表什么意思？

造粒的方法目前常用的有三种，即（）、（）、（）。

热电偶测温时，输出信号应采用（）连接。

A、普通电缆；

B、屏蔽电缆；

C、通信电缆；

D、补偿导线。