问题
单项选择题
在钢筋直径或级别超出“常用对焊机的技术数据”的规定时，如果钢筋端面较平整，则宜采用（）
A.连续闪光焊
B.预热闪光焊
C.电阻点焊
D.气压焊
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
在钢筋直径或级别超出“常用对焊机的技术数据”的规定时，如果钢筋端面较平整，则宜采用（）
A.连续闪光焊
B.预热闪光焊
C.电阻点焊
D.气压焊
参考答案：B
| 阅读理解 | ||||||||||
| Today's teens have a knowledge of the Internet that often surpasses that of their parents. Because so many teens are Internet survey, it is important that they also have an understanding of the dangers that exist online and how to deal with them. Watch teens share their own"RealLife Stories" about issues affecting them on the Internet such as cyberbullying(网络欺凌), online enticement, and giving out too much personal information.
1.The ad. is intended for________. A. kids loving to play games online B. only victims of the Internet use C. kids and their parents who want to learn about the safety online D. preschool students who know little about the Internet 2. If you visit the website, you can________. A. share your friends'" RealLife Stories" about issues affecting them on the Internet B. have an understanding of the dangers that exist online and how to deal with them C. say and do terrible things to each other online D. ask for help when you have difficulty with your study 3. If you visit www.cybertipline.com, you can ________. A. contact your local law enforcement B. search our knowledge base for answers to all of your questions about the online world C. report any incident of the Internet use D. help your siblings learn how to avoid the dangers that exist on the Internet 4. Which of the following stories you can share on the Real Life Stories? A. A teen was murdered by the man she met in a chat room. B. Problems of losing weight. C. Left home alone. D. Hurt by secondhand smoke in the Internet cafe. |