A、deg(f(x)g(x)) B、deg(f(x)g(x))>max{degf(x),degg(x)} C、deg(f(x)+g(x))>max{degf(x),degg(x)} D、deg(f(x)+g(x))=max{degf(x),degg(x)}
A、deg(f(x)g(x)) B、deg(f(x)g(x))>max{degf(x),degg(x)} C、deg(f(x)+g(x))>max{degf(x),degg(x)} D、deg(f(x)+g(x))=max{degf(x),degg(x)}
A、N20 G00 X65.0 Z0.0; N25 G80 U-5.0 Z–35.0  R–5.0  F0.1 B、N20 G00 X65.0 Z0.0; N25 G80 X60.0 W–35.0  R–5.0  F0.1 C、N20 G00 X65.0 Z0.0; N25 G80 U-5. W–35.0  R–5.0  F0.1 D、N20 G00 X65.0 Z0.0; N25 G80 U5.0 Z–35.0  R–5.0  F0.1 E、N20 G00 X65.0 Z0.0; N25 G80 X60.0 W35.0  R–5.0  F0.1
A、N20 G00 X65.0 Z0.0; N25 G90 U-5.0 Z–35.0  R–5.0  F0.1 B、N20 G00 X65.0 Z0.0; N25 G90 X60.0 W–35.0  R–5.0  F0.1 C、N20 G00 X65.0 Z0.0; N25 G90 U-5. W–35.0  R–5.0  F0.1 D、N20 G00 X65.0 Z0.0; N25 G90 U5.0 Z–35.0  R–5.0  F0.1 E、N20 G00 X65.0 Z0.0; N25 G90 X60.0 W35.0  R–5.0  F0.1
A、R(m-1)(n+1)(x) B、R(n+1)(m-1)(x) C、R(x)(n+1)(m-1) D、R(m-1)(x)