Learning Educational Building Constructionsets 5122 Stacking Game: Contains 12 building blocks and 1 dice, stacked according to the specified color, leaving a trap for the opponent, or it may become your own trap in the next round. The Make it real Learning Educational Building Constructionsets With Electric Drillis made in accordance with the ergon Designs of the models are based on real machines and structures.






eLearning is becoming a profitable niche for starting an online business. Audiences who relied on traditional classrooms are now moving online in search of knowledge and training.
Developing an online course requires the following resources:
- eLearning authoring tool - an eLearning software that supplies all the tools required to create and design a course.
- eLearning platform - an online platform or marketplace that allows course creators to upload their courses and learners to access these courses.
If you are going to create your own eLearning course, you would be following four fundamental stages:
Analysis.
Design and development.
Course evaluation and testing.
Hosting

Riveting screws and bolts are common parts on mechanical equipment, mainly used to link various parts.
But in the process of use, sometimes it will break.
Clean the sludge and drill holes with electric drill hand tool set; ①Remove the sludge on the surface of the broken head of the pressure riveting screw; ②.
Use the center gun to die the center gun of the section; ③, then use the electric drill to install a small diameter point, and then use a large bit suitable bit to drill the hole in the center of the cross section (note that the hole must be drilled through); ④ After the hole is drilled, remove the small drill bit, replace it with a small diameter point, and then use a larger bit suitable drill bit to continue to enlarge and drill the hole of the broken bolt.2.
Use a small and medium current to build the weld from the inside to the outside of the drill hole of the broken bolt.
Take the half of the entire length of the broken bolt at the beginning of the weld and start the weld.