The safe working load for the assembled cargo gear and the minimum angle to the horizontal for which the gear is designed shall be marked on the ______.
A.deck
B.head of the boom
C.heel of the boom
D.mast or king post
第1题:
Cargo booms must be weight tested to recertify the Safe Working Load(SWL)every ______.
A.Year
B.Two years
C.Four years
D.Five years
第2题:
When a cargo boom or crane is rated at varying capacities,there will be a table at the controls which relates safe working load to ______.
A.winch speed
B.boom strength
C.load radius
D.cable strength
第3题:
______is an angle at which a cargo settles in the hold of a ship,between the horizontal and the slope made by a bulk cargo such as grain or iron ore.
A.Angle of loll
B.Angle of inclination
C.Angle of repose
D.Angle of list
第4题:
“SWL” means ().
第5题:
the load line becomes submerged
a non-watertight opening is at still water level
offset becomes excessive
reserve buoyancy is a maximum
第6题:
Safe working load
Ship's working lift
Starboard wing lift
Stress,weight,load
第7题:
one-half the SWL of the main towing hawser
three-fourths the SWL of the main towing hawser
that of the main towing hawser
twice that of the main towing hawser
第8题:
after torque causes line pull to exceed the rated capacity of the winch
before the line pull reaches the rated capacity of the winch
when the line pull reaches the breaking strength of the fall
before the safe working load of the fall is reached
第9题:
4,based on the breaking strength
5,based on the maximum allowable stress
6,based on the maximum working load
8,based on the normal working load
第10题:
increases as the boom's angle to the horizontal increases
is at a maximum when the boom is at a 45° angle to the horizontal
increases as the boom's angle to the horizontal decreases
decreases as the boom's angle to the horizontal decreases
第11题:
deck
head of the boom
heel of the boom
mast or king post
第12题:
year
two years
four years
five years
第13题:
If the cargo gear on your vessel is equipped with a regular guy and a preventer guy,you should ______.
A.Let the schooner guy take most of the strain,thus transferring the load to the opposite boom
B.Leave the preventer guy slack
C.Secure them as close together as possible on deck
D.Secure them so the angle between them is 90° at the boom head
第14题:
If an electric cargo winch is being used to lift a draft of cargo and the engine room loses all power,which will occur ________.
A.A pawl,forced by a spring mechanism,will engage the teeth of the bull gear and hold the load
B.An electromagnetic brake will hold the load where it is suspended
C.The load will fall rapidly to the deck unless the foot brake is engaged
D.The load will slowly lower to the deck under control of the drag of the winch motor
第15题:
In relation to cargo gear, what does SWL mean ?______.
A.Safe working load
B.Ship’s working lift
C.Starboard wing lift
D.Stress, weight, load
第16题:
above
below
equal to
uncertain
第17题:
Safe working load
Ships working lift
Starboard wing lift
Stress , weight , load
第18题:
5 tons
5 metres
5 feet
5 years
第19题:
winch speed
boom strength
load radius
cable strength
第20题:
let the schooner guy take most of the strain,thus transferring the load to the opposite boom
leave the preventer guy slack
secure them as close together as possible on deck
secure them so the angle between them is 90°at the boom head
第21题:
increases as the angle to the horizontal increases
increases as the angle to the horizontal decreases
is greatest at an angle of 45° and decreases as the boom is raised or lowered
is least at an angle of 45° and increases as the boom is raised or lowered
第22题:
5 times the maximum working pressure on the hose during cargo transfer
one half the designed working pressure
4 times the pressure of the cargo pump used for transferring
5 times the minimum working pressure on the hose during cargo transfer
第23题:
single derrick
derrick
heavy derrick
deck