电机是以电磁感应和电磁力定律为基本工作原理进行电能的传递或机电能量转换的机械。 一、电机在国民经济中的作用: 1.电能的生产、传输和分配中的主要设备 2.各种生产机械和装备的动力设备 3.自动控制系统中的重要元件

1、数据库的基础知识 2、能够利用 Access建立数据库并进行基本操作; 3、了解 SQL Server2000系统的概况

头部矢状断层解剖的制作方法 以通过前、后正中线作的正中矢状断面 为标准,向左和向右所做的连续断面

Genera of picornaviruses Enterovirus Polio Diseases of the human (and other alimentary tract Coxsackie a and B (e.g. polio virus

Category of sample Blood, Urine, Stool, nasal washing, nasal swab, throat swab, saliva, sputum, rectal swab, vesicle fluid scraping or swab) tissue, brain biopsy, cerebrospinal fluid, et

Medical Virology Dept. of Medical Microbiology and Parasitology Shanghai Second Medical University Shanghai, China. E.mail:(xkguoshsmu.edu.cn)

Biological Features Structure and chemical composition Developmental cycle Staining properties Antigens Growth and metabolism Characteristics of host-parasite- relationship Classification

Campylobacter Among the most widespread cause of infection in the world Cause both diarrheal and systemic diseases Campylobacter jejuni

General introduction Gram-negative, obligate intracellular coccobacilli bacteria that infect mammals and arthropods Rickettsiae are transmitted in the arthropods, which serves as both vector and reservior Both dna and rna Is sensitive to antibiotic

Biological Features Aerobic, Gram, noncapsulated, rods Gray-black colonies on tellurite亚碲酸盐 medium o Metachromatic granules Chinese-letter morphology in Gram stain