【名词&注释】
毒理学(toxicology)、致病性(pathogenicity)、结核分枝杆菌(mycobacterium tuberculosis)、卫生部(ministry of health)、化学物质(chemicals)、分枝杆菌属(mycobacterium)、麻风分枝杆菌(mycobacterium leprae)、医护人员手(hands of medical staff)
[单选题]根据卫生部标准要求,医护人员手(hands of medical staff)部细菌数不得超过()
A. 9CFU/cm2
B. 8CFU/cm2
C. 10CFU/cm2
D. 11CFU/cm2
E. 12CFU/cm2