题目内容

() is the proper moulding process for Large parts of low-quantity production

A. casting
B. injection
C. compression

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Cycle time of ( ) is much faster than other processes and the part cost can be low.

A. compression moulding
B. casting moulding
C. injection moulding

中英文配对

Match the parts and moulds

Which one is not the heat treatment of metal?

A. quench
B. tempering
C. annealing
D. shaping