与滚动轴承相比,滑动轴承有何特点?

题型:问答题

问题:

与滚动轴承相比,滑动轴承有何特点?

考点:高级钳工高级钳工题库
题型:问答题

判断下列句子,是否符合短文内容, 符合的用 “T”表示,不符合的用 “F” 表示。

     A 14-year-old boy from the USA was described as a hero yesterday after he saved the life of a

girl in another country.

     Dean Bluey from Dallas, Texas, was a school boy who was interested in computer. One day, he was

sending an e-mail to a friend on the Internet. Suddenly he received a message saying "Help! Help! Help!"

The message was from Finland, thousands of kilometers way from the USA.

     "I didn't know what I should do," Dean said to a reporter. "It was really difficult to tell if the message

was real." So Dean did nothing at first. But the message kept coming.

     "By then it was easy to see that someone was in trouble," Dean explained. He replied and discovered

that the sender was a 20-year-old student called Tarja, who was alone in a university library. She was

very ill. What was worse, there was no phone around her. Her only way of communicating with the

world was by e-mail.

     Dean got in touch with the Texas police. The police immediately realized that the situation was quite

serious. They found it necessary to call the police in Finland. Then an ambulance rushed to the university,

and soon doctors found Tarja. Luckily, she was still alive and was quickly sent to the hospital.

     "I'm glad she's OK," Dean said. "It's hard to believe, but e-mail saved her life."

( )1.  Dean Bluey was a 14-year-old boy from Dallas, Texas, the USA.                            

( )2.  When he was sending an e-mail, Dean heard someone calling outside.                        

( )3.  Dean didn't know whether the message was real when he  first got it.                      

( )4.  Tarja was a university student in the USA, thousands of  kilometers away from Dean.      

( )5.  At that time in the library, Tarja was able to ask for help in many ways.                

( )6.  Dean made a phone call to the police in Finland and told them about Tarja's trouble.      

( )7.  From the story we know that the Internet played an important part in saving Tarja's life.

题型:问答题

创伤和战伤常用的现场急救技术包括()

A.复苏、通气、止血、包扎、固定、清创

B.复苏、通气、止血、包扎、固定

C.复苏、输液、通气、止血、包扎、固定

D.复苏、输液、气管切开、止血、包扎、固定

E.复苏、通气、止血、包扎、固定、搬运

题型:问答题

力学:物理学

A.购物:方便

B.公园:世界公园

C.银行:超市

D.意大利语;外语

题型:问答题

我国食品安全管理体制实行从“农田到餐桌”的“多部门共同监管模式”。

题型:问答题

YL12的增塑剂刷辊的转速设计为()r/min。

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