问题 多项选择题

自动人行道按结构形式可分为()。

A.行星轮式自动人行道

B.带式自动人行道

C.踏步式自动人行道

D.双线式自动人行道

答案

参考答案:B, C, D

解析:

自动人行道是带有循环运行(板式或带式)的走道,按结构形式可分为踏步式自动人行道(类似板式输送机)、带式自动人行道(类似带式输送机)和双线式自动人行道。自动人行道适用于机场、车站、码头、商场、展览馆和体育馆等人流集中的地方。

阅读理解

A volcanic eruption in Iceland has sent ash across northern Europe Airlines have stopped or changed the flights across the Atlantic Ocean, leaving hundreds of passengers stuck in airports.

Grimsvom is one of the largest and most active volcanoes in Europe. What makes Grimsvom different is that it lies under a huge glacier(冰川) of ice up to 12 maters thick. The hot volcano heats up the ice above it, which then forms a layer(层)of water between the glacier and the volcano This layer of water puts pressure on the volcano, keeping it stable, As the water flows out from under the glacier, the pressure lifts. The lava(岩浆) from the volcano then comes up to the surface. This is exactly what happened today.

Now, airlines have to make changes to their flights so as not to fly through the clouds of volcanic ash. according to KLM, one of Europe’s biggest airlines, airplanes cannot go under the cloud or over it. Going through the cloud can result in ash getting stuck in the airplane’s engines, causing damage to the plane.

The eruption has also caused problems for animals in Iceland. The volcano left ash and sharp. Glass-like rocks all over the countryside. Farmers are keeping their animals inside to stop them from eating ash—covered grass to the sharp object.

小题1:What makes Grimsvom different from other volcanoes?

A.It is below ice.

B.It lies under the sea

C.It is the largest volcano

D.It is lava affects the airlines小题2:What keeps Grimsvom still?

A.The slow flow of water.

B.The low water temperature.

C.The thick glacier.

D.The water pressure.小题3:Which of the following is the result of the volcanic eruption?

A.People stop traveling in Europe.

B.Airlines suffer from the loss of planes.

C.It becomes dangerous for animals to eat outside.

D.Farmers have lost many of their animals.小题4:This text is most probably taken from________.

A.a research paper

B.a newspaper report

C.a class presentation

D.a geography textbook

问答题 简答题