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In a domestic fresh water system, the pump starters are controlled by （） switches which operate when the pressure in the tank varies within predetermined limits as water is drawn off.
A . water level
B . water flow
C . temperature
D . pressure
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What color exhaust will be exhibited when a slow speed two-stroke/cycle main propulsion diesel engine, designed to operate on light and heavy fuel oil, is operated on insufficiently preheated heavy fuel oil?（）
A . White
B . Black
C . Blue
D . Clear
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When loading a container vessel，the operation is basically that of vertical loading. The important factors to be considered when loading containers are port of discharge，（）.
A . available dunnage，and chocking
B . crushability，and inherent vice
C . sweat，and weight
D . weight，and refrigeratio
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What is the action that a GMDSS Radio Operator should take when a DSC distress alert is received? （）
A . No action is necessary，as the DSC control unit will automatically switch to the NBDP follow-on communications frequency
B . The operator should immediately set continuous watch on the radiotelephone frequency that is associated with the frequency band on which the distress alert was received
C . The Operator should immediately set continuous watch on VHF channel 70
D . The Operator should immediately set continuous watch on the NBDP frequency that is associated with the frequency band on which the distress alert was received
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When in operation, it is unavoidable that a small amount of oil （） through leakage, and in order to compensate for these leaks the system is connected to a feed pump.
A . escapes
B . overheats
C . expands
D . accelerate
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When there is a flame failure in an automatically fired auxiliary boiler, the （）.
A . air supply is shut off
B . fuel supply is shut off
C . water supply is shut off
D . safety valve lift
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Upon a user’s first visit to the website， which two operations are always performed when the getSession method is called with no arguments in a servlet？（）
A . All URLs returned by the server are rewritten.
B . An HttpSession object is created if necessary.
C . The user name and password of the user are checked.
D . The session ID is stored in the HTTP response as a cookie.
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When the steering gear is in operation, you should （）.
A . check hydraulic oil levels every hour
B . check the rams for overheating
C . check for excessive oil leakage from rams
D . drain water from telemotor cylinders each watch
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When recovering from a disaster, the backup and restore operation you use is similar to the export/import configuration procedure, with one additional step. Which additional step must you take when recovering from a disaster?（）
A . A new WebSphere profile is required to restore the configuration.
B . The restored system requires the IBM Tivoli Access Manager for e-business （TAMeb） JRTE to be manually configured against the WebSphere’s Java Runtime to allow the IBM Tivoli Federated Identity Manager （ITFIM） Runtime to function properly.
C . The ITFIM Domain needs to be created manually within the Integrated Solution Console.
D . The ITFIM Runtime instance needs to be re-registered with the TAMeb policy server by running the SvrSslCfg command.
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When oily water separator is operating, which measure （） is wrong.
A . pay attention to operating parameters
B . renew and clean separating units in time
C . check oil level in separator to prevent overload
D . check separating effect, if it is bad, flush with large capacity water pum
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You plan to control the sessions performing a huge number of I/O operations. Your requirement is to kill the session when it exceeds a specified number of I/Os. Which statement describes a solution to the above?（）
A . Set a threshold for the default system-defined moving window baseline.
B . Add directives to the Automatic Database Diagnostic Monitor (ADDM).
C . Modify the profile for the targeted users for which control needs to be imposed.
D . Implement the database resource manager to add the SWITCH_IO_REQS and SWITCH_GROUP directives.
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When a diesel engine is operate at partial load, as compared to full load ,a decrease will occur in the average （）
A . air quantity aspirated
B . fuel injection pressure
C . combustion pressure on the power stroke
D . compression on the compression stroke
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When normal operating pressure is applied to the hydraulic oil used in a high-pressure system, the oil （）.
A . viscosity will decrease
B . volume will increase
C . volume will decrease
D . pour point will be reduced
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Which one is not the normal operation for boiler shutdown?（）
A . Carry out soot blowing if permissible
B . Change fuel supply to diesel oil
C . Close steam stop valves on boiler when pressure is reduced
D . Drain boiler empty when it has cooled dow
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Which action should be taken when an auxiliary boiler in is operation?（）
A . Clean all electrical connections
B . Lift the relief valves by hand
C . Inspect and clean all solenoid valves
D . Inspect for oil and water leak
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（） should be tested and adjusted when the boiler survey is carried out.
A . The boiler oil tank
B . The steam pipe
C . The fire side
D . The safety valve
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Which of the following actions should normally be taken during each watch when the auxiliary boilers is in operation?（）
A . clean the flame scanner photocell window
B . Inspect and clean all solenoid valves
C . lift the safety valves by hand
D . Inspect for oil or water leak
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The plunger in the fuel injector pump, usually operated by a （）, is driven up and down when working.
A . crankshaft
B . camshaft
C . piston rod
D . rack and pinio
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The furnace of an oil fired boiler should be （） before the operating burner is lit.
A . filled with water
B . purged
C . cleared of air
D . None of the above is true
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Which RMAN command is used to verify the status of a backup or copy， and also updates the repository when files have been deleted using operating system commands？（）
A . CHANGE
B . RESYNC
C . CATALOG
D . CROSSCHECK
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Start-Up Diagnostics are a diagnostic routine that regularly operate automatically when the CNC is switched on.
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Start-Up Diagnostics are a diagnostic routine that regularly operate automatically when the CNC is switched on.
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Which is a potential hazard when operate a machine tool?
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When loading a container vessel，the operation is basically that of vertical loading．The important factors to be considered when loading containers are port of discharge，______．
A.Available dunnage，and chocking
B.Crushability，and inherent vice
C.Sweat，and weight
D.Weight，and refrigeration
