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To ensure oil purifier working in normal condition,the interval between two sludge discharging should not exceed（） hours.
A . A.2
B . B.4
C . C.5
D . D.6
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In an operating diesel engine, which of the following condition is an indication of a leaking air starting valve?（）
A . noise coming from that air starting valve
B . continuous operation of the starting air compressor
C . zero air pressure in the air starting system
D . overheated starting air pipe to the cylinder head
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Assuming an even transverse distribution of weight in a vessel，which condition could cause a list?（）.
A . Empty double-bottoms and lower holds，and a heavy deck cargo
B . Flooding the forepeak to correct the vessel's trim
C . Having KG smaller than KM
D . Having a small positive righting arm
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A fire starting by spontaneous combustion can be expected in which condition?（）.
A . Paints，varnish，or other liquid flammables are stowed in a dry stores locker
B . Inert cargoes such as pig iron are loaded in a wet condition
C . Oily rags are stowed in a metal pail
D . Clean mattresses are stored in contact with an electric light bul
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In which service component of the wireless operate phase are incident trends analyzed to identifypatterns and systemic conditions？（）
A . System Monitoring
B . Security Administration
C . Operations Setup
D . Problem Management
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Which of the following statements about authentication responses and conditions is true? （）(Choose two.)
A . When a router receives a failure response, it stops querying authentication methods.
B . When a router receives an error response, it stops querying authentication methods.
C . If the router receives a failure response from an authentication method, it queries the next method.
D . The router does not differentiate between failure and error responses; the authentication process is always interrupted.
E . If it receives no response from the authentication method, a router will determine the error condition on its own; the router also has the option to proceed to the next method in a list if configured accordingly.
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The main distribution duct in an air conditioning system which contains the cooling coils and filters is called the（）
A . manifold
B . condenser
C . chamber
D . plenum
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Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
A . Sub-cooled liquid
B . Sub-cooled vapor
C . Superheated vapor
D . Liquid
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In which service component of the wireless operate phase are incident trends analyzed to identify patternsand systemic conditions？（）
A . System Monitoring
B . Security Administration
C . Operations Setup
D . Problem Management
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The maneuvering information required to be posted in the wheelhouse must be based on certain conditions.Which of the following is NOT one of these conditions?（）
A、 The hull must be clean
B、 There must be calm weather – wind 10 knots or less and a calm sea
C、 There must be no currents
D、 The depth of the water must be at least one and one-half times the draft
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Which condition indicates that you are in a hurricane’s dangerous semicircle in the Northern hemisphere（）.
A . A backing wind
B . A veering wind
C . A norther
D . A strong，gusty wind
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Possible phase relationships between voltage and current in an alternating current circuit include which of the following conditions?（）
A . Current and voltage may be in phase
B . Current may lead the voltage
C . Current may lag the voltage
D . All of the above
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In Oracle 11g，by default which one of the following conditions implicitly enables Automatic PGA Memory Management？（）
A . Setting a nonzero value for SGA_TARGET
B . Configuring Automatic Shared Memory Management
C . Configuring Automatic Memory Management
D . Setting a nonzero value for SGA_MAX_SIZE and PGA_AGGREGATE_TARGET
E . None of the above
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Based on which two conditions can master Preventive Maintenance （PM） schedules be created？（）
A . elapsed time since the target start date or completion date of previous work generated by PM
B . difference between completion date of previous work and system date is equal to Lead Time
C . elapsed time since the target start date or completion date of the latest work orders for the asset
D . metered equipment usage since the target start date or completion date of previous work generated by PM
E . metered equipment usage since the target start date or completion date of the latest work order for the asset
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Under which three conditions does a client initiate roaming between wireless cells in the Company WLAN？ （）
A . The access point has broadcast too many SSIDs.
B . The wireless client has missed too many beacons from the access point.
C . The maximum data retry count， initiated by the wireless client， is exceeded.
D . The wireless client has reduced the data rate.
E . The access point has requested client reauthentication.
F . The wireless client has missed too many IAPP （Inter Access Point Protocol） updates.
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Which conditions will normally cause a SART to operate in the active mode?（）
A . It will respond only to interrogation by 9-Ghz radar signals
B . A SART will normally respond to interrogation from a searching vessel's radar if the radar antenna is at least 15 meters high
C . A SART will normally respond to interrogation from a searching aircraft's radar if the radar's output power is at least 10，000 watts and the aircraft is at a height of 3000 feet and within 30 nautical miles
D . All of the above
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Which general weather conditions should you expect to find in a low pressure system（）.
A . Fair weather
B . Precipitation and cloudiness
C . Scattered clouds at high elevations
D . Gradual clearing and cooler temperature
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Which condition suggests that your present position lies in the navigable semicircle of a tropical storm（）.
A . A backing wind
B . A veering wind
C . Sustained gale force winds
D . A strong wind that maintains a constant speed and directio
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Obesity is a medical condition in which excess body fat has accumulated to exceed ( ) of the standard body weight.
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Explain two ways in which public speaking and conversation differ, and two ways in which they are similar.
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Which one is not included in the conditions for the US's changing attitude towards Iran？
A．To abandon their nuclear weapons program.
B．Iran's leader must accept the suggestion of peace-lovers.
C．To turn over A1-Qaida terrorists in their custody.
D．The Iran leaders shall acknowledge the faults.
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Biodiversity doesn’t contribute to the maintenance of the biosphere in a condition which supports human and other life.
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CHD is a condition in which the heart’s arteries （）
A．冠心病是指心脏动脉血管变窄，使得流向心肌的血量减少，而且还可能导致动脉血管的完全阻塞。
B．冠心病产生的条件是动脉血管变窄，从而减少流向心脏的血液，造成动脉的堵塞。
C．冠心病是由动脉血管的阻塞引起的，这会减少流向心肌的血液，从而导致血管变窄。
D．冠心病由于导致了动脉血管的完全阻塞，从而减少了流向心脏的血液，这使得血管变窄。
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The industrial societies have been extremely productive during the last two centuries. The economic advance has been remarkable. During this relatively short period of time, greater changes in people's living conditions have occurred than in the thousands of years which preceded.
During the past 200 years the world population has increased 6 times, the annual world output has increased 80 times, and the distance a person can travel has gone up 1,000 times. There has also been much recent progress in art, culture, learning, and science. Such changes have led to a high rate of production and growth of the economy.
Economists fear that within the next 100 to 150 years, the earth's resources will become very scarce. Their fears are partly justified, but we should not be afraid. Industrial civilization adapts to new knowledge. By advancing knowledge, we not only create new forms of resources, but we also find ways to economize their use. Advanced modern knowledge can feed the hungry people of the world and improve their standard of living.
The figures in the second paragraph are used for the following purposes EXCEPT______.
A．prediction.
B．contrast.
C．definition.
D．explanation.
