docx
Office Open XML (OOXML) format was introduced with Microsoft Office 2007 and became the default format of Microsoft Word ever since. Pertaining file extensions include: .docx – Word document. .docm – Word macro-enabled document; same as docx, but may contain macros and scripts.
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other words are not clear
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Explanation:
A civil Engineer builds buildings, roads and bridges.
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Text Messages
Explanation:
Synchronous communication is a simultaneous communication between two people. This is the type of serial communication where two person can communicate at the same time. This type of communication exclude face to face communication and phone communication.
for example
during Chat when we are taking to someone he also can reply the same time.
A learning management system (LMS) is a software application for the administration, documentation, tracking, reporting and delivery of educational courses or training programs.