多发性抽搐症好发年龄为()
A.1~3岁之间
B.2~12岁之间
C.3~6岁之间
D.1~12岁之间
E.6~12岁之间
参考答案:B
汉译英:“动植物检疫;宰前兽医检验”,正确的翻译为:( )
A.animal and plant quarantine; ante- mortem veterinary inspection
B.ante-mortem veterinary inspection; animal and plant quarantine
C.animal and plant quantum; detection of defects
D.detection of defects; ante - mortem veterinary inspection
锅炉上水的速度要求有哪些?