Boilermakers welding certification test

Boilermakers welding certification test
For boiler workers, a very common welding certification test is to weld 2 inches of 120 tubes at 6G, use Tig for root and second pass, and bond the filler and cover channels. Sound is simple? If you think this is simple, then it is wrong. The 2" pipe completed at the 6G position means that the axis of the pipe is at a 45 degree angle to the parallel line when the pipe i...

Technology – takes time

Technology – takes time
Technological innovation has always provided sudden progress for mankind, and this progress has always been the path of progress and development. The invention of personal computers and the availability of the Internet have revolutionized the world's impact and enabled users to have the power of an ultra-fast virtual world at every end. Smartphones have also proven to be...

Disadvantages of computers in the classroom

Disadvantages of computers in the classroom
The most important fact that should be explained at the outset is that computers are a tool, like any educational tool, from books to crayons, which can be used to enhance the curriculum and promote learning, but it can also be misused and misused. In this article, I will discuss the shortcomings of installing computers in the classroom due to abuse and abuse of this tool. I...
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