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单选题
Blocks and falls used as lifeboat gear must be designed with a minimum safety factor of().
A
4,based on the breaking strength
B
5,based on the maximum allowable stress
C
6,based on the maximum working load
D
8,based on the normal working load
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考题
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考题
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考题
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单选题According to the Code of Federal Regulations,on vessels other than river ferryboats and river vessels,how are periodic lifeboat weight tests required to be conducted?()A
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单选题()are used for anchor gear in marine work where the chains must withstand the corrosive effects of seawater.A
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A windlassC
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考题
单选题What is the accepted standard for wire rope falls used in connection with the lifeboat gear?()A
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考题
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考题
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考题
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考题
单选题When launching an open lifeboat by falls,the boathooks should be().A
secured forward and aft where readily availableB
secured amidships where they will not hinder the personnelC
used for fending offD
used for picking up survivors in the water
考题
单选题A personal alarm is designed for old people to ______.A
detect safety conditions at homeB
avoid falls in the bathroomC
send out signals for helpD
make phone calls easily
考题
单选题Which statement is TRUE concerning lifeboat gripes?()A
They must be released by freeing a safety shackleB
They should not be released until the boat is in lowering positionC
They may be adjusted by a turnbuckleD
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考题
单选题The lifeboat releasing gear lever should be marked with the words().A
DANGER,DO NOT TOUCHB
DANGER,BOAT MAY DROPC
DANGER,LEVER RELEASES BOATD
DANGER,LEVER DROPS BOAT
考题
单选题According to regulations,a cargo hose used for transferring liquefied gases must have a bursting pressure of().A
5 times the maximum working pressure on the hose during cargo transferB
one half the designed working pressureC
4 times the pressure of the cargo pump used for transferringD
5 times the minimum working pressure on the hose during cargo transfer
考题
单选题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
deckB
head of the boomC
heel of the boomD
mast or king post
考题
单选题With reference to rules governing steering gear, which one of the following rules is incorrect? ()A
It is required that all ships are provided with two independent steering gear systems that is one main and one auxiliaryB
The auxiliary gear could be power operated in passenger shipsC
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All moving parts of the steering gear must be guarded against any possible damage
考题
单选题According to the regulations for lifeboat falls,which action must be taken with the falls no later than 5-year intervals?()A
Proof testedB
End-for-endedC
RenewedD
Weight tested
考题
单选题All wire rope used in shipboard cargo gear must be identified and described in a certificate. The certificate shall certify all of the following EXCEPT the().A
date of the testB
load at which a test sample brokeC
name of the vesselD
number of strands and of wires in each strand
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