根据《杂物电梯》规定,如果说在维修时,控制柜、控制屏是带电的,则在控制柜、控制屏的前

题型:单项选择题

问题:

根据《杂物电梯》规定,如果说在维修时,控制柜、控制屏是带电的,则在控制柜、控制屏的前面必须提供不小于()的净空距离。注:这一要求可以通过安装可移动式控制柜、控制屏的措施来达到。

A、0.9m

B、0.6m

C、0.5m

D、0.4m

考点:电梯操作证考试电梯操作证考试题库
题型:单项选择题

看图短文填空。

       Mid-Autumn Day is one of the _1   traditional festivals in china. It is on _2_ 15th in Chinese calendar.

  On that day, families usually get _3_ and have a big meal. In the evening, you know, the moon is big,

  bright and _4  . We usually go outdoors to enjoy the   5_ and eat moon cakes in the open air. We have a

  good time.

       Look! Tom got a lot of presents from his parents. His mother _6_ two lanterns(灯笼) for him. One

  was big, the _7_ was small. His father helped him to hang them _8_. When Tom saw the _9_ food on the

   table, he was very pleased. After dinner, Tom went out with his parents. They looked at the moon in the

  open air. They didn't go home _10_ mid-night. What a happy day!

1. _____ 2. _____ 3. _____  4. _____  5. _____ 

6. _____ 7. _____ 8. _____ 9. _____ 10. _____ 

题型:单项选择题

十堰中学生小东为了给网友小新介绍我们十堰市农业生产的基本情况,收集了以下信息,请你结合所学知识帮助小东进行正确的选择(  )

③ 地类型:水田   ②熟制:一年二熟或三熟   

③主要粮食作物:小麦、玉米、大豆  ④主要油料作物:油菜  

⑤主要糖料作物:甜菜  

A.①③④

B.①②④ 

C.②③⑤

D.②④⑤

题型:单项选择题

确定换热器总传热系数的方法有()。

A、查样本书

B、经验估算

C、公式计算

D、实验测定

题型:单项选择题

You either have it, or you don’t—a sense of direction, that is. But why is it that some people could find their way across the Sahara without a map, while others can lose themselves in the next street?

Scientists say we’re all born with a sense of direction, but it is not properly understood how it works. One theory is that people with a good sense of direction have simply worked harder at developing it. Research being carried out at Liverpool University supports this idea and suggests that if we don’t use is, we lose it.

“Children as young as seven have the ability to find their way around,” says Jim Martland, Research Director of the project. “However, if they are not allowed out alone or are taken everywhere by car, they never develop the skills.”

Jim Martland also emphasizes that young people should be taught certain skills to improve their sense of direction. He makes the following suggestions:

●If you are using a map, turn it so it relates to the way you are facing.

●If you leave your bike in a strange place, put it near something like a big stone or a tree. Note landmarks on the route as you go away from your bike. When you return, go back along the same route.

●Simplify the way of finding your direction by using lines such as streets in a town, streams, or walls in the countryside to guide you. Count your steps so that you know how far you have gone and note any landmarks such as tower blocks or hills which can help to find out where you are.

Now you need never get lost again!

65. Scientists believe that_______.

A. some babies are born with a sense of direction.

B. people learn a sense of direction as they grow older

C. people never lose their sense of direction

D. everybody possesses a sense of direction from birth

66. What is true of seven-year-old children according to the passage?

A. They never have a sense of direction without maps

B. They should never be allowed out alone if they lack a sense of direction

C. They have a sense of direction and can find their way around

D. They can develop a good sense of direction if they are driven around in a car.

67. If you leave your bike in a strange place, you should ________.

A. tie it to a tree so as to prevent it from being stolen

B. draw a map of the route to help remember where it is

C. avoid taking the same route when you come back to it

D. remember something easily recognizable on the route

68. According to the passage, the best way to find your way around is to ________.

A. ask policemen for directions.

B. use walls, streams, and streets to guide yourself

C. remember your route by looking out for steps and stairs

D. count the number of landmarks that you see

题型:单项选择题

古希腊先哲柏拉图在谈到他生活的雅典时说:“这里的公民灵魂变得非常敏感,只要有谁建议要稍加约束,他们就觉得受不了,就要大发雷霆……他们真的不要任何人管了,连法律也不放在心上,不管成文的还是不成文的。”这主要表明()

A.柏拉图时代的雅典公民充满了自由精神

B.雅典的直接民主制使他们面临体制性危机

C.柏拉图因为恩师苏格拉底被判有罪而诋毁雅典民主政治

D.当时雅典尚没有法律来约束公民

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