Which of the following are the characteristics of the injection moulding of plastics? It is the most economical method of mass producing 1. a single item. 2. In most cases finished products are obtained. 3. There is lot of waste of thermoplastic since the 4. Runners and sprues cannot be reused. Select the correct answer by using the following codes:

Which of the following are the characteristics of the injection mouldi

1.	Which of the following are the characteristics of the injection moulding of plastics? It is the most economical method of mass producing 1. a single item. 2. In most cases finished products are obtained. 3. There is lot of waste of thermoplastic since the 4. Runners and sprues cannot be reused. Select the correct answer by using the following codes:
A.	1 and 2
B.	2 and 3
C.	1 and 3
D.	1, 2 and 3
Answer» B. 2 and 3

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