更多"Which system(s) in the hydraulic sy"的相关试题:
[单项选择]In which of the listed hydraulic systems will the installation of an oil cooler be necessary?（）
A. Constant tension mooring winch system
B. Hatch cover system
C. Watertight door system
D. Internal combustion engine hydraulic starter system
[单项选择]Which of the following hydraulic systems is not one of the three sub-division of the Hydraulic drive system?（）
A. Constant pressure system
B. Variable pressure system
C. Variable displacement system
D. Constant volume system
[单项选择]A reservoir, as used in hydraulic systems aboard ship, is used to store hydraulic oilAnother function is to（）
A. act as a shock absorber
B. maintain the stored oil under pressure
C. act as a base or foundation for the power unit
D. eliminate pressure surges in the system
[单项选择]External and internal leakage in hydraulic systems may be caused by （）.
A. unusual vibration
B. excessive worn parts
C. abnormal pressure
D. any of the above
[单项选择]Strainers are commonly used in hydraulic systems to （）.
A. protect the pump from fine soluble contaminants
B. prevent solid particles from entering the pump
C. prevent solid particles from entering the filter
D. protect the directional control valves
[单项选择]It is important with all hydraulic systems to ensure that interlocking arrangements provided for pump or motor control levers are （） before the pump driving motor can be started.
A. in the pert position
B. in the starboard position
C. in the neutral position
D. to be dismantled
[单项选择]（） play a very important part in hydraulic systems by preventing interaction between different parts of the hydraulic circuit.
A. Motors
B. Check valves
C. Safety valves
D. Reducing valve
[单项选择]Which action(s) is/are included in crane operations?（）
A. Normal boom stowage and shutdown operations
B. Emergency shutdown operation
C. Removing booms from stowage
D. All of the above
[单项选择]Which action（s）is/are included in crane operations（）.
A. Normal boom stowage and shutdown operations
B. Emergency shutdown operation
C. Removing booms from stowage
D. All of the above
[单项选择]Which statement(s) is/are TRUE concerning crane cargo operations? （）
A. Do not exceed rated load capacity of crane and container spreader or slings
B. During any cargo handling operation，the safety of personnel is paramount
C. Cargo handlers must be outfitted with adequate protection from personal injury
D. All the above
[单项选择]The routing system which aimed at reducing the risk of casualties is called as（）.
A. traffic separation schemes
B. recommended tracks
C. precautionary areas
D. inshore traffic zones
[单项选择]AMVER is a system which provides（）.
A. satellite communications
B. navigational information
C. weather information
D. position reporting service
[单项选择]The Routing System which aimed at reducing the risk of casualties is called as（）.
A. Traffic Separation Schemes
B. Recommended tracks
C. Precautionary areas
D. Inshore traffic zones
[单项选择]Which statement comparing a shipboard crane to conventional gear is TRUE（）.
A. Cranes are more difficult to secure for sea
B. The spotting area of the conventional gear is larger
C. A crane operator requires more training than the winch operator of a yard and stay rig
D. The yard and stay rig is more flexible in its ability to handle a wider variety of cargoes
[单项选择]A ship crane which has been idle for a period of over six months shall be inspected to the same standards as a（）.
A. yearly inspection
B. quarterly inspection
C. monthly inspection
D. weekly inspection
[单项选择]The crane manufacturer’s operating tables are posted near the（）.
A. crane pedestal
B. wire-rope locker
C. main deck
D. crane controls
[单项选择]The component of a refrigerating system in which the refrigerant vaporizes and absorbs heat is known as the （）.
A. condenser
B. vapor generator
C. accumulator
D. evaporator
