【单选题】以下关于计算机病毒与蠕虫的特点比较中,说法正确的是()
C.
为系统打补丁,能有效预防蠕虫,但不能有效预防病毒
【简答题】Who invented the modem soccer ?
【单选题】工程施工索赔分类中,将承包商的索赔划分为工程延误索赔、工程变更索赔、合同被迫终止索赔、工程加速索赔、意外风险和不可预见因素索赔等,是依据( )进行分类。
【单选题】I don't know _____. [ ]
A.
when the camera was invented
B.
who the camera was invented
C.
when was the camera invented
D.
who the camera invented
【简答题】在建设工程施工索赔中,按索赔事件的性质不同,可将索赔分为( )。
【单选题】—Who was it _____? —Thomas Edison. [ ]
【单选题】—Doy ou know who invented telephone? —No , butit is really most usefulinvention .
【单选题】— Who invented the light bulb? — It _____ by Thomas Edison. [ ]