单选 Which of the following means skin disease?( )
A. dermatopathy
B. dermatitis
C. dermatology
D. dermatologist
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单选Which of the following means abnormal condition of excessive sweat?( )
A. necrosis
B. anhidrosis
C. hypohidrosis
D. hyperhidrosis
单选Which of the following means black tumor?( )
A. hepatoma
B. melanoma
C. gastroma
D. lipoma
单选Which of the following means softening of nails?( )
A. onychomycosis
B. onychophagia
C. onychectomy
D. onychomalacia
单选Collagen fibers are the major components of the ____
A. subcutaneous layer
B. dermis
C. epidermis
D. hypodermis