新生儿颅内出血的诊断，下列哪项有确诊价值（）
A.病史
B.临床表现
C.腰穿检查脑脊液
D.头颅CT
E.脑电图
参考答案：D
There are some back-up satellites in the event of failure. If the operational satellite is out of work,（）.
A.communications in the whole system will stop
B.the global system will be damaged
C.the back-up one will take its place
D.the whole system will not work
某绵羊消瘦贫血腹泻，粪检大量椭圆形，卵壳薄，无卵盖，网站内含多个卵细胞的虫卵，鉴定该羊群感染的寄生虫种类的方法是（）
A.毛蚴孵化法
B.虫卵沉淀法
C.幼虫培养法
D.虫卵计数法
