Part A: Answer the following questions: 1. List the equipments needed to perform the standered API tests for drilling cements.( / Mark) 2. How the high-resistant cement different from a standered Portland cement? ( 1 Mark) 3. Discuss the advantages of using liner rather than full length casing string. ( / Marks) 4. Write a short note about chrstmis tree, its function and the difference between christms tree an BOP. (2 Mark)