下列公式中，齿数比前的正负号由G、K两轮在（）中的转向关系确定。
A. 实际轮系
B. 转化轮系
Which one of the following is a prokaryote?
A. Bacteria
B. Algae
C. Protozoa
D. Fungi
E. Prion
Hypersensitivity reactions that involve antibodies include
A. Only type I hypersensitivity
B. Only type I and type II hypersensitivity
C. Type I, II, and III hypersensitivity
D. Type IV hypersensitivity
E. Type I and type IV hypersensitivity
The disease that is caused by type III hypersensitivity is
Atopic dermatitis
B. Goodpasture’s syndrome
C. Serum sickness
D. Allergic rhinitis
E. Autoimmune hemolytic anemia
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