How many types of memory are there _____ our brain?[ ]
A. in
B. at
C. on
D. with
A
近期发生心肌梗死的患者,择期手术至少应在多长时间后进行()
A.2周
B.6周
C.6个月
D.12个月
E.18个月
下列哪项不是轻型腹泻的临床表现()。
A.每日大便10次
B.大便呈蛋花汤样
C.眼窝明显凹陷
D.大便镜检可见脂肪滴
E.便前可有腹痛