The man-machine can be classified as
A. manual
B. mechanical
C. automatic
D. All of these
Answer: Option D
A. manual
B. mechanical
C. automatic
D. All of these
Answer: Option D
A. aluminium
B. iron
C. stainless steel
D. copper
A. Rutt
B. Stella Saundaraja
C. Crang and Rush
D. Mary Jean Alexander
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