The hydraulic （） is used to control engine speed.
A . motor
B . pump
C . governor
D . capsta
相似题目
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Which of the following statements describes the functions of a reservoir used in a hydraulic system?（）
A . Dissipate heat
B . Trap foreign matter
C . Separate air from the oil
D . All of the above
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Which of the following can be used in hydraulic transmission system?（）
A . Hydraulic oil
B . Animal oil
C . Light oil
D . Fuel oil
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Which of the following types of hydraulic pumps would be used in a steering system?（）
A . Lobe
B . Screw
C . Radial piston
D . Volute
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Among the basic categories of equipment, which of the following are used to allow the hydraulic energy to be controlled?（）
A . hydraulic pumps
B . valves
C . hydraulic cylinders
D . hydraulic motor
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An orifice-check valve placed in a hydraulic system is used to（）
A . regulate the fluid flow in either direction
B . restrict movement of hydraulic fluid in one direction, but allow free movement in the other direction
C . allow free movement of hydraulic fluid in both directions
D . allow a restricted fluid flow in one direction only
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The function of the hydraulic telemotor transmitter used in an electro-hydraulic steering gear system is to （）.
A . transmit the rudder angle to the bridge indicator
B . prevent the control linkage from striking the stops when hard over
C . automatically purge all entrained air from the system
D . send hydraulic signals to the receiving unit
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You are using Oracle Database 10g. The LOG_ARCHIVE_FORMAT parameter is set to ’LOG%t_%s_%r.dbf’. Why is %r used in the file name format？（）
A . to uniquely identify the archived log files with the restore operation
B . to uniquely identify the archived log files with the redo log group number
C . to uniquely identify the archived log files for each incarnation of the database
D . to uniquely identify the archived log files with the number of recovery operations performed
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The purpose of the compensating adjustment used in a diesel engine hydraulic governor is to （）
A . compensate for low oil level
B . increase governor promptness
C . prevent governor hunting
D . limit engine load
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Among the basic categories of equipment, which of the following are used to convert the hydraulic energy into linear motion?（）
A . Hydraulic pumps
B . Valves
C . Hydraulic cylinders
D . Hydraulic motor
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Hydraulic control check value is generally used to （） in the marine hydraulic mechanism.
A . control the back pressure of return oil
B . lock the oil lines under some conditions
C . change the direction of oil flow
D . act as relief valve
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Hydraulic pumps most commonly used in steering systems are of the （）.
A . lobe type
B . screw type
C . axial piston type
D . volute type
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The item（）is not the advantage of the hydraulic winch．
A . less jerky starts
B . less jerky stops
C . overheating worries
D . none of the overheating worrie
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The major cause of trouble in a mechanical-hydraulic governor is contamination of the hydraulic fluid by （）
A . dirt
B . fuel oil
C . governor cooling water
D . fuel oil tar
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Overload protection on hydraulic system is provided by the use of （）.
A、stop valves
B、pressure relief valves
C、balance valves
D、regulating speed valves
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If one hydraulic pump of an electro-hydraulic steering unit falls, the vessels steering can be initially and best maintained by using the （）.
A . trick wheel
B . accumulator
C . standby pump
D . telemotor
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An axial piston, variable stroke pump is used in a vessels hydraulic steering gearUnder pressure, oil continually leaks out from between the valve plate/cylinder barrel and will（）.
A . cause loss of hydraulic oil from the system
B . result in extreme damage to the pump
C . cause damage to the pump ff not continually drained from the pump casing
D . result in the system high side pressure to substantially drop off
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Among the basic categories of equipment, which of the following is used to convert hydraulic energy into continuous rotary motion?（）
A . Hydraulic pumps
B . Valve
C . Hydraulic cylinders
D . Hydraulic motor
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A hydraulic machine is one that uses （） to do work.
A . liquid
B . steam
C . gas
D . electricity
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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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The storage device for nitrogen-pressurized hydraulic fluid，which is used in closing the blowout preventers is called the（）.
A . actuator
B . annulus
C . accumulator
D . annular preventer
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Among the basic categories of equipment, which of the following are used to convert mechanical into hydraulic energy?（）
A . The hydraulic pumps
B . Valves
C . Hydraulic cylinders
D . Hydraulic motor
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Fuel injection uses the jet pump system and a Woodward type hydraulic （） is used to control engine speed.
A . controller
B . governor
C . instrument
D . apparatu
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The active voice is used to describe the action. The passive voice is mainly used to describe the state or the result of the action. (T/F)
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When the relief valve is used as a constant pressure valve, it is connected to the outlet of the hydraulic pump to ensure that the outlet pressure of the hydraulic system (pump) is constant.
A:正确;
B:错误
