或逻辑的逻辑表达式为()。
A、P=AB
B、P=A-B
C、P=A+B
D、P=AÅB
参考答案:C
---- Have you heard of Steven Jobs, the co-founder and CEO of Apple?
---- Yes, but it’s a pity that he has _____ for a half year..
A.died
B.been dying
C.been dead
D.death
下肢深静脉血栓形成不包括()
A.卧床休息,抬高患肢
B.溶血栓疗法
C.抗凝治疗
D.对超过3日以上的中央型深静脉血栓形成进行手术治疗
E.物理治疗