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1. |
What is the composition of cartridge brass? |
A. | 50 % Cu and 50 % Zn |
B. | 60 % Cu and 40 % Zn |
C. | 70 % Cu and 30 % Zn |
D. | 20 % Cu and 80 % Zn |
Answer» D. 20 % Cu and 80 % Zn | |