职业病防治的宗旨是为了预防、控制和消除职业危害，防治职业病，()。
A. 保护劳动者健康及其相关权益
B. 保护劳动者健康，促进经济发展
C. 保护劳动者健康及其相关权益，促进经济发展
D. 保护劳动者健康，促进社会全面发展
E. 以上均错误
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1. Each point about gonococcus is right EXCEPT ____?
A. It has pili ,
B. It is arranged in chain
C. It has capsule,
D. It is diplococcus arranged in pairs.
What statement is not right about gonococcal infection?
A. It causes gonorrhea,
B. It affects the endocervix and urethra in females.
C. It is transmitted via sexual contact,
D. Animals may spread the infection to human.
Which statement is not right about structural componets and antigen of gonococcus?
A. It has outer membrane in the cell wall;
B. It has O-antigen;
C. Endotoxin may contribute to its pathogenesis;
D. Its peptidoglycan in cell wall is in stable three dimentional structure.
Which molecule is not involved the pathogenensis of gonococcal infection?
A. lipoprotein
B. IgA proteases, D.
C. pili ,
D. endotoxin
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