为了使标签覆盖背景,应把backstyle属性设置为()
A. 0
B. 1
C. true
D. false
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数据161,161,162,163,163,164,165,165,165的中位数是()。
A. 163
B. 163.5
C. 164
D. 0
Atechnicianispreparingusereducationtoraiseawarenessofmalware.Thetechnician’sgoalistoincreaseuserawarenessandpreventthefuturespreadofmalware.AllofthefollowingaremalwaresymptomsEXCEPT:()
A. increasednumberofpop-ups.
B. decreasedvolumeofspam.
C. decreasedsystemperformance.
D. homepagehijacking.
Whatisavaildactionforafirewallfilter?()
A. thendrop
B. thencount
C. thenallow
D. thencommunityadd
我国公民的基本义务包括()
A. 维护国家统一和民族团结
B. 遵守宪法和法律
C. 保卫祖国
D. 依法纳税