SOS求救信号可以用()的任何信号来表示。A、三长,三短,再三短 B、三短,三短,再三

题型:单项选择题

问题:

SOS求救信号可以用()的任何信号来表示。

A、三长,三短,再三短

B、三短,三短,再三长

C、三短,三长,再三短

D、三短,三长,再三长

考点:应急救援员应急救援员理论知识应急救援员理论知识题库
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根据短文内容,用方框中所给的单词填空。
         own, costs,back,noticed,offered
     On Mother's Day, a man stopped at a flower shop to order some flowers to be mailed to his mother
who lived two hundred miles away. As he got out of his car he     1   a young girl crying. He asked her
what was wrong and she answered,"I want to buy a red rose for my mother,but I only have seventy-five
cents,and a rose    2   two dollars. "The man smiled and said," Come on in with me. I'll buy you a rose. "
He bought the little girl her rose and ordered his    3    mother's flowers. As they were leaving he     4    
the girl a ride home. She said,"Yes, please. You can take me to my mother. " She directed him to a
cemetery (墓地) ,where she placed the rose on a grave (坟墓). The man went     5     to the flower shop,
canceled  (取消 ) the  mail  order, picked up the flowers and drove two hundred miles to his mother's
house.
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ATM业务适配类型中能传结构化信息的类型为()

A.AAL1

B.AAL2

C.AAL3/4

D.AAL5

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为了使超声波束聚焦,可在探头晶片前面加装一块具有适当曲率的板,这块板称为()。

A、清洗器

B、声透镜

C、斜楔

D、延迟块

题型:单项选择题

中国现代首倡幽默,被称为幽默大师的是()。

题型:单项选择题

签订合同时收款、付款方式一般情况下选择是()

A.汇票

B.支票

C.电汇

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