Basically phase is an angle of line joining the origin and the any point on the wave with $x$ axis of our reference frame and the word phase is defined for the single wave function. But the phase difference is defined for two waves.
To become a Certified Construction Manager (CCM), you must have a requisite amount of experience and/or education. ONE of the following: An undergraduate (4-year BA/BS level) or graduate qualifying degree. A 2-year undergraduate qualifying degree (AA/AS level) AND 4 years experience in general design/construction.
Commence or further your career in building administration and management. This qualification is designed for management roles in the building and construction industries. It will allow you to develop your skills and knowledge of construction and management processes. It will provide you with the opportunity to commence or further your career in building administration and management. Course details. Download pdf.