For which of the listed classes of fire combinations would carbon dioxide be most suitable as the extinguishing agent （）.

A . Develop ductility B . Improve machining qualities C . Relieves stresses D . All of the above

A . Certificate of Inspection B . American Bureau of Shipping Classification Certificate C . International Convention for the Safety of Life at Sea Certificate D . Certificate of Registry

A . Fan B . Pump C . Winch D . Machine tool

A .  Enable root guard to mitigate ARP address spoofing attacks. B .  Configure DHCP spoofing to mitigate ARP address spoofing attacks. C .  Configure PVLANs to mitigate MAC address flooding attacks. D .  Enable root guard to mitigate DHCP spoofing attacks. E .  Configure dynamic APR inspection （DAI） to mitigate IP address spoofing on DHCP untrusted  ports. F .  Configure port security to mitigate MAC address flooding   G .  None of the other alternatives apply

A . SELECT ENAME FROM EMP WHERE SYSDATE-HIRE_DATE > 5; B . SELECT ENAME FROM EMP WHERE HIRE_DATE-SYSDATE > 5; C . SELECT ENAME FROM EMP WHERE (SYSDATE-HIRE_DATE)/365 > 5; D . SELECT ENAME FROM EMP WHERE (SYSDATE-HIRE_DATE)* 365 > 5

A . 6 knots B . 7 knots C . 9 knots D . 12 knot

A . 7 knots B . 10 knots C . 15 knots D . 20 knot

A . SELECT ENAME FROM EMP WHERE SYSDATE-HIRE_DATE >5; B . SELECT ENAME FROM EMP WHERE HIRE_DATE-SYSDATE >5; C . SELECT ENAME FROM EMP WHERE (SYSDATE_HIRE_DATE)/365 >5; D . SELECT ENAME FROM EMP WHERE (SYSDATE_HIRE_DATE)*/365 >5

A . /var/rmc/ctrmc.acls B . /etc/ctrmc/rsct.acls C . /etc/security/rsct.acls D . /usr/sbin/rsct/cfg/ctrmc.acl

A . Dry chemical B . Foam C . Water D . Carbon dioxide

A . Chilled water system supply temperature B . Chilled water system return temperature C . Compressor discharge temperature D . Compressor suction pressure

A . Common-rail injection B . Air injection C . Jerk pump injection D . Distribution injectio

A . Hydraulic oil B . Lubricating oil C . Diesel oil D . Refrigeration oil

A . Individual statements in a named access list may be deleted. B . They require a numbered range from 1000 to 1099. C . When created, they must be specified as standard or extended. D . They are created with the ip access-list command. E . The entire access list must be deleted before editing. F . They are applied with the ip name-group command.

A . 100PPM oily water separator B . Assembling the lube oil purifier as a separator and aligning bilge overboard C . A 15PPM oily water separator D . A magnetic duplex strainer

A . Frequent draining of accumulated moisture B . Frequent testing of relief valves C . A close watch on temperature to prevent fluctuations in pressure D . Frequent cleaning to re move oil and foreign matter

A . Foam B . Soda acid C . Dry chemical D . Carbon dioxide

A . They should always be started with the discharge valve closed B . They should always be started with the discharge valve opened C . A priming pump is always required to flood the impeller suction D . They should always be started with the sealing line valves closed

A . The generator and bus transfer section B . The 450 volt, 60 cycle, 3 phase bus C . The 120 volt, 3 phase, 60 cycle bus D . The 24 volt DC bu

A . ps B . pstat C . lssig D . procsig

A . Engine room ventilation should be started B . Main engines should be secured C . The fire pump should be started D . The fixed CO system should be activated

A.CO2 B.ABC dry chemical C.CO2 propelled foam D.All of the above

A.Water fog B.Carbon dioxide C.Dry chemical D.Solid stream of water

A A false sense of security B Remote destinations C Too risky for some D Holidays that don't quite work E New findings F Very little real danger G Too much routine H Second-hand experiences I Available to all Activity Holidays Whether it's bungee-jumping, climbing or sky-diving, we want to test ourselves on holiday. Peter Jones tries to find out why. Risk-taking for pleasure is on the increase. Adventure activities and "extreme" sports are becoming very popular and attracting everyone from the young and fit to people who, until recently, were more likely to prefer walking round museums at weekends. Grandmothers are white-water rafting, secretaries are bungee-jumping, and accountants are climbing cliffs. 【B1】__________ Well-planned summer expeditions to tropical locations are now fashionable for European university students. As they wander over ancient rocks or canoe past tiny villages, away from it all, it ]s quite possible to feel "in tune with nature", a real explorer or adventurer. 【B2】__________ A whole blanch of the travel industry is now developing around controlled risks. Ordinary trippers, too, are met off a plane, strapped into rafts or boats and are given the sort of adventure that they will remember for years. They pay their money and they trust their guides, and the wetter' they get the better. Later, they buy the photograph of themselves "risking all in the wild". 【B3】__________ But why the fashion for taking risks, real or simulated？ The point that most people make ix that city lie is tame, with little variety, and increasingly corrtroled. Physical exercise is usually restricted to aerobics in the gym on a Thursday, and a game of football or tennis in the park or a short walk at the weekend. 【B4】__________ Says Trish Malcolm, an independent tour operator: "People want a sense of immediate achievement and the social element of shared physical experience is also important.' Other operators say that people find the usual type of breaks-such as a week on the beach-Loo slow. They say that participation in risk sports is a reflection of the restlessness in people. They are always on the go in their lives and want to keep up the momentum on holiday. 【B5】__________ But psychologists think it's even deeper than this. Culturally, we are being separated from the physical, outside world. Recent research suggests that the average person spends less and less time out of doors per day. 【B6】__________ Nature and the great outdoors are mostly encountered through wildlife films or cinema, or seen rushing past the windows of a fast car. In a society where people are continually invited to watch rather than to participate, a two-hour ride down a wild and fast- flowing river can be incredibly exciting. 【B7】__________ One psychologist believes that it is all part of our need to corrtrol nature. Because we have developed the technology to make unsinkable boats, boots that can stop us getting frostbite or rackets that allow us to survive in extreme temperatures, we are beginning to believe that nothing will harm us and that we are protected from nature. That is until nature shows us her true power in the form. of a storm, flood or avalanche. 【B1】______