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航海英語(yǔ)特種貨物運(yùn)輸及有關(guān)規(guī)則單項(xiàng)選擇題每日一練(2019.01.07)

單項(xiàng)選擇題
A spreader bar is used to（）.
A.increase the lifting capacity
B.increase the lifting radius
C.protect the slings
D.protect the upper part of a load
單項(xiàng)選擇題
Special stowage in deep tanks is obviously required for（）.
A.liquid commodities in containers
B.bottled liquid commodities
C.common liquid commodities in bulk
D.liquid commodities in cylinders
單項(xiàng)選擇題
If a cargo of kerosene were considered too lean to explode，then it must be（）.
A.above the explosive range
B.within the explosive range
C.below the explosive range
D.None of the above
單項(xiàng)選擇題
Ullages are measured from（）.
A.the tank ceiling
B.the tank top bushing
C.the thievage mark
D.an above deck datum
單項(xiàng)選擇題
When loading bulk liquid cargo，what is the FIRST action you should take if a cargo valve jammed open?（）
A.Trip the pump relief valve
B.Order the dock man to shut down
C.Call the owner，operator，or terminal supervisor
D.Run out the vessel's or terminal's fire hose