男28岁,胸部疼痛1周余,神清,心律齐,超声心动图如下,根据图片应提示()
A.单心室
B.心内膜垫缺损
C.三尖瓣上移
D.三尖瓣下移
E.三尖瓣狭窄
参考答案:D
80386在实地址方式下的有效存储空间为( )。
A.4GB
B.16MB
C.大于1MB小于2MB
D.1MB
In relation to liability under the delict of negligence explain:
(a) the standard of care owed by one person to another; (6 marks)