In Boolean Logic, if one wants to search only for sources relevant with computer virus, the search formula should be_______.
举一反三
- In Boolean logic, the search formula A near B enlarges the scope of search over A.
- In a Boolean search, joining two terms with “and” broadens the search .
- (42秒-55秒）If one search for sale, which of the following elements should one consider as the crucial factors?
- You should conduct a sector search under which of the following circumstances?( ) A: A.The search target is sighted and then lost B: B.More than one vessel is available for a search C: C.The search object is a target that will be readily detected by radar D: D.AN aircraft is available to assist a surface vessel
- You must have the basic computer skills. At the very , you should be able to and email comfortably, search the Internet, and type reasonably and .