4. when people talk with Japan as usual, and there are documents or materials can listen and understand. explaining the steps to perform a task or how to use the tools that are relevant to their work.
4. When people say with a normal speed and a photo documentation or props can listen and understand the procedures described in the operation or how to use various tools related to their work.
4. When the Japanese say with fast as usual and documents, images or props can listen and understand the describes the steps in the work or how to use tools activities related to their work .