To prevent the spread of fire by convection you should （）.

A . flammable vapors from entering machinery space B . flue gas escaping to atmosphere C . inert gas escaping to atmosphere D . air entering inert gas system

A . convection B . conduction C . radiation D . ventilatio

A . convection B . conduction C . radiation D . direct contact

A . A special sealing gland B . Propeller C . Tailshaft D . Sterntube bearing

A . additive B . none C . no-export D . no-advertise E . local-a

A、injection valve B、relief valve C、discharge valve D、inlet filter

A . convection B . conduction C . radiation D . direct contact

A .  policy based routing （PBR） B .  unicast reverse path forwarding （uRPF） C .  lock and keyACL D .  RFC 1918filtering E .  IP source routing

A . cooling surfaces adjacent to the fire B . leaving combustibles in the endangered area C . increasing the oxygen supply D . All of the above

A . cool the bulkheads around the fire B . remove combustibles from direct exposure C . close all openings to the area D . shut off all electric power

A . switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security maximum 1 B . switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security mac-address 1 C . switch(config-if)#switchport mode access switch(config-if)#switchport port-security maximum 1 D . switch(config-if)#switchport mode access switch(config-if)#switchport port-security mac-address 1

A . sensitivity B . stability C . promptness D . speed droo

A . Unsafe actions B . Orderliness C . Frequent inspections D . Good work habit

A . shutting off the oxygen supply B . cooling surfaces adjacent to the fire C . removing combustibles from the endangered area D . removing smoke and toxic gases by ensuring adequate ventilatio

A . high pressure alarm B . fire alarm C . extinguishers D . fusible plug

A . around the rudder and screws B . completely around the vessel C . to leeward of the vessel D . to windward of the vessel

A . bunker fuel for use aboard ship B . lubricating oil for use aboard ship C . coconut oil carried in tank vessels D . oily water from a ships bilge

A．Y B．N C．NG

A．shake hands with our friends instead of kissing them B．never touch the telephones, towels or plates C．often wash our hands D．often rub our noses and eyes

A．The Department of Health required Civil Contingency Secretariat to publish documents for the pandemic preparedness. B．The Department of Health required the UK national committee to co-work with hospital trusts and local authorities. C．The Department of Health required Civil Contingency Secretariat to make a pandemic plan as soon as possible. D．The Department of Health requires every hospital to store Tamiflu, the precious flu vaccine.