A.at least 13.1 feet away from the galleys，living quarters or navigation spaces
B.from the open deck
C.only from areas equipped with power ventilation systems
D.isolated from any part of the vessel which normally contains sources of vapor ignition
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A.On top of No.1 hatch
B.Beside the hatches，forward of the midships house
C.On top of the hatch immediately forward of the midships house
D.On top of the hatch immediately aft of the midships house
A.a vessel towing by pushing ahead
B.a power-driven vessel，not towing
C.a barge being pushed ahead
D.either answer A or answer B
A.the towboat vibrates when backing down
B.the roostertail exceeds the height of the main deck
C.a strain is placed on the face wires
D.water comes over the foredeck of the lead barges
A.main string
B.push string
C.power string
D.face string
A.increase the lifting capacity
B.increase the lifting radius
C.protect the slings
D.protect the upper part of a load
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Cargo booms must be weight tested to recertify the Safe Working Load (SWL) every（）.
Prior to backloading portable tanks or drums onto an offshore supply vessel，check that each tank is（）.
If reefer spaces are not properly cleaned prior to loading cargo，it will most likely cause（）.
By regulation，cargo tanks must be inert before and during what operation?（）.
Sea water temporarily pumped into tanks to simulate the increased vertical loading of environmental forces is termed（）.
In order to minimize the effects of a tender vessel，when carrying a cargo of lumber，you should（）.
Ullage measurements are taken from the top of the liquid to（）.
Ullages are measured from（）.
Air gap is the vertical distance between the bottom of the hull and the（）.
The type of carrier required to file a copy of freight tariffs would be the（）.