问题 问答题

冶金专用起重机的工作特点有哪些?

答案

参考答案:

冶金专用起重机的工作特点是:

(1)参与特定的工艺流程。

(2)工作级别高。具体表现在:利用等级高,冶金企业全年连续生产,起动、制动频繁,每小时接电次数最高可达150~300次。载荷状态重,在脱锭、钳式、平炉加料桥式起重机中,起升载荷与小车质量相比较小,故作用在桥架上的载荷无论是否起吊,载荷都接近额定载荷值。

(3)工作环境恶劣,具体表现在:高温,大部分车间内有很多粉尘和有害气体,噪声大。

(4)冲击负荷大。

阅读理解

Last summer, when Amanda R of Anaheim Hills, California, was running on a cross-country course with her team, she blacked out. “I got really dizzy,” she says. “I was out for a few minutes.” At first, Amanda thought she was just tired and didn’t think she had a health problem. She did go to the emergency room, where she was fine after tests, but she fainted (昏厥) again several days later as she was talking with her coach. Another doctor guessed that Amanda had blacked out “because we were in heat so much with not enough water and not enough of the right kind of foods”.

Teens often don’t want to stop and take a break or don’t notice when they start to feel bad, doctors say. However, paying attention if you’re not feeling well is important, as Amanda learned.

As a result, Amanda has changed her habits. “I drink a lot more water,” she says. “And put more salt in my diet. I’m eating more balanced meals.” Amanda advises teen athletes to trust their coaches and speak up when they’re not feeling well. “And recognize the difference between when you’re tired and when there’s something really wrong.”

Some people - up to 3 percent of the population - sweat too much, even in cold weather. The condition, called hyperhidrosis (多汗), can affect many parts and it often runs in families - hands down from generation to generation. Too much sweating over the whole body could be a symptom of another medical condition. Doctors aren’t sure what causes hyperhidrosis, but using special medications or other treatments can help.

小题1:What caused the happening mentioned in the passage during Amanda’s running?

A.She couldn’t breathe in enough air in the race.

B.She didn’t eat anything before the race.

C.She had been running all summer without a rest.

D.She neither drank enough water nor ate enough of the right kind of foods.小题2:What can we infer from Paragraph 4?

A.There is no need to worry when sweating too much, even in cold weather.

B.Hyperhidrosis may have a bad effect on your health.

C.Doctors have discovered why people get hyperhidrosis.

D.Hyperhidrosis is a serious disease and no treatment can help.小题3:The purpose of writing this passage is to____________.

A.tell teens the proper ways to take exercise in summer.

B.tell teens not to run in hot summer.

C.tell teens to pay attention to hyperhidrosis in the summer exercise

D.tell teens how to keep healthy.

名词解释