CO2
Foam
Dry Chemical
Water
第1题：
An extinguishing agent which effectively cools, dilutes combustible vapors, removes oxygen, and provides a heat and smoke screen is ______.
A.carbon dioxide
B.Halon 1301
C.dry chemical
D.water fog
第2题：
Foam is a very effective smothering agent and ______.
A.it provides cooling as a secondary effect
B.works well on extinguishing electrical fires
C.can be used to combat combustible metal fires
D.All of the above
第3题：
A.Update antivirus definitions
B.MAC filtering
C.Effective security policies
D.User awareness training
第4题：
Alcohol foam
Dry chemical
Chemical foam
Water fog
第5题：
Which of the following is MOST likely the reason a technician would implement software RAID for a SOHO environment？（）
第6题：
As an extinguishing agent, foam ______.
A.conducts electricity
B.should be directed at the base of the fire
C.is most efffective on buring gases which are flowing
D.extinguishes by cooling oil fires below ignition temperature
第7题：
Which of the following security mitigation techniques is the MOST effective against zero-day attacks?（）
第8题：
Which statement about tunnel bow thrusters fitted to large vessels is TRUE ________．
A.They are effective on most vessels at speeds up to 10 knots
B.Because of their location，most modern installations have as much power as a tug
C.They are fully effective at all drafts
D.When going astern at slow speed，they provide effective steering control
第9题：
Which of the following wireless security techniques is the MOST secure?（）
第10题：
Dry chemicals
CO2
Foam
All the above