更多"Which of the following tensioning d"的相关试题:
[单项选择]Which of the following devices are protected from being motorized by a reverse-power relay?（）
A. Alternators
B. Wave guides
C. Exciters
D. Amplidynes
[单项选择]Which tensioning device is used with chain to secure heavy vehicles aboard Ro-Ro vessels（）.
A. Chain lever
B. Buckle tensioner
C. Adjust-a-matic tensioner
D. Ratchet tensioner
[单项选择]Which of the following devices is common to both mechanical and hydraulic governors?（）
A. Direct linkage between the ball-head and fuel rack
B. A servomotor
C. A compensating device
D. Flyweights
[单项选择]Which of the following devices is a common basic element with nearly all mechanical governors?（）
A. Power piston
B. Control rack
C. Weights acted on by centrifugal force
D. Isochronous droop spring
[多项选择]Which of the following devices can an administrator use to segment their LAN?（）
A. Hubs
B. Repeaters
C. Switches
D. Bridges
E. Routers
F. Media Converters
G. All of the above
[单项选择]Which of the listed devices is used to measure pressure and convert it to an electrical signal?（）
A. Transducer
B. Reducer
C. Transformer
D. Rectifier
[单项选择]Which of the following components are used to convert alternating current produced in the generator windings to direct current?（）
A. Armature and equalizer
B. Commutator and brushes
C. Rotor and interpoles
D. Field and exciter
[单项选择]Which of the following methods is used to prevent throttling of compressed air through the diesel engine air starting valves?（）
A. Holding the valve open for a long period
B. Increasing the starting air pressure used
C. Opening the stating air valve quickly
D. Reducing the starting air valve size
[单项选择]Which of the following pumps is used where a relatively high pressure and small capacity are required?（）
A. Volute pump
B. Diffuser pump
C. Regenerative pump
D. All of the above
[单项选择]Which of the following can be used in hydraulic transmission system?（）
A. Hydraulic oil
B. Animal oil
C. Light oil
D. Fuel oil
[单项选择]Which of the following terms is used to identify the pressure of the liquid entering a pump?（）
A. Suction head
B. Pump head
C. Discharge head
D. Total head
[单项选择]Signaling devices which are required on inflatable liferafts include（）.
A. a rocket shoulder rifle
B. an oil lantern
C. red flares
D. an air horn
[多项选择]Which Layer 1 devices can be used to enlarge the area covered by a single LAN segment?（）
A. Switch
B. Router
C. NIC
D. hub
E. Repeater
F. RJ-45 transceiver
[单项选择]Which of the listed devices could be used as a substitute for a ring grooving tool?（）
A. Steel brush
B. Fine emery cloth or steel wool
C. A section of the removed compression ring
D. A case hardened scraper
[单项选择]Which of the listed devices could be used as a ring groove tool during preparation for the installation of new rings?（）
A. Steel brush
B. Fine emery cloth or steel wool
C. A section of the removed compression ring
D. A case hardened scraper
[多项选择]Which of the following technologies can be used in distance vector routing protocols to prevent routing loops?（）
A. Spanning Tree Protocol
B. Shortest path first tree
C. Link-state advertisements (LSA)
D. Hold-down timers
E. Split horizon
F. VRRP
[单项选择]Which of the following definitions can be used to define the term ‘offset ’ as a characteristic of controller action?（）
A. The period of time in which the set point and the control point coincide
B. The periodic change between the set point and the control point
C. The variable difference between the set point and the control point
D. The constant difference between the set point and the control point
[单项选择]Which of the following methods is normally used to lubricate bearings in a small high-speed diesel engine?（）
A. Splash lubrication
B. Pressure lubrication
C. Sight feed lubricators
D. Mechanical lubricators
