The second morning after surgery for a below-the-knee amputation of the left leg, the client says, "This sounds weird, but I feel pain on my left feet. " The nurse knows the client is experiencing a

A. denial reaction.
B. hallucination.
C. phantom-limb sensation.
D. body image disturbanc

WJ-8型扣件，钢轨调高量大于15mm时用（）型螺旋道钉。