问题 问答题 论述题

数字探伤仪与模拟仪器操作方式有哪些不同?

答案

参考答案:

模拟式超声波探伤仪采用旋钮操作,一个旋钮对应一个功能。如衰减钮调节灵敏度、深度范围钮调节探测范围、工作方式选择旋钮选择探测方式等。数字化超声波探伤仪各种功能采用键盘来实现,一键多功能,仪器面板简单,以人机对话的方式完成对仪器的操作。

阅读理解
阅读理解。
                                                        Help is Around the Corner
     Everyone needs someone to talk to when they need help. If there's something that you can't get help
from the people around you, here are some telephone hotlines: Open 24 hours a day,7 days a week.
     Anonymous and secret. This means they won't ask for your name or share anything you talk about
with others.
     Able to help you with any problem you're having, no matter how big or small.
     Able to give you names and numbers of places near you that can also help.
     Ready to listen to you for free.

Covenant House Nineline
1-800-999-9999
English and Spanish
Boys and Girls Town Hotline
1-800-448-3000
English and Spanish

Child Help
1-800-422-4453
English and Spanish
National Hopeline Network
1-800-784-2433
English and Spanish
1. It is a great surprise that we can get help _____.
A. without any money
B. with much money
C. from young children
2. The underlined word "anonymous" means "_____" in the reading.
A. 有特色的
B. 匿名的
C. 无特色的
3. Maybe many people will like to get help from the hotline because _____.
A. they can know others by talking on the phone
B. they can get all that they need by talking to others
C. nobody else will know their personal information
4. Mrs Brown has a son who is eleven years old. He doesn't get on well with her. Which phone number
    should she call to ask for help?
A. 1-800-999-9999.
B. 1-800-784-2433.
C. 1-800-422-4453.
5. After reading the passage, we know that it is _____.
A. a teaching plan
B. an advertisement
C. a school report
单项选择题