使用自然掩码的IP地址125.3.54.56的网络地址是().
A.125.0.0.0
B.125.3.0.0
C.125.3.54.0
D.125.3.54.32
参考答案:A
有一年轻男性患者,在得知自己患了黄疸性肝炎以后,很恐惧,怕女朋友离开他,怕同车间的伙伴疏远他,所以十分恳切地请求医师替他保密。医师要求他抓紧治疗,不要耽误了病情。医师的正确做法是()
A.替病人保密的同时,把他留在医院治疗
B.替病人保密,给他开一些对症的药,让他在家治疗,以免别人知道
C.应该拒绝保密,拒绝给他治疗,以免被传染
D.介绍他去别的医院
E.不能保密,让他住院,隔离治疗
The greatest chance for the existence of extraterrestrial life is on a planet beyond our solar system. The Milky Way galaxy alone contains 100 billion other suns, many of which could be accompanied by planets similar enough to Earth to make them suitable abodes of life. The statement above assumes which of the following
A.Living creatures on another planet would probably have the same appearance as those on Earth.
B.Life cannot exist on other planets in our solar system.
C.If the appropriate physical conditions exist, life is an in evitable consequence.
D.More than one of the suns in the galaxy is accompanied by an Earth-like planet.
E.(E) It is likely that life on another planet would require conditions similar to those on Earth.