A.one barrel
B.two barrels
C.five barrels
D.ten barrels
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A.any wire running fore-and-aft on a ship
B.any wire with a fiber core
C.a heavy wire extending from the trunk of the mast to the head of the boom
D.a heavy wire extending from the mast，atwartships to the deck，to support the mast
A.In the lower level of the pumproom
B.In the middle level of the pumproom
C.In the upper level of the pumproom
D.On the deck outside the pumproom
A.weather deck
B.orlop deck
C.shelter deck
D.main deck
A.tripping line
B.tripping bracket
C.norman pin
D.steamboat ratchet
A.two chains of equal length
B.a single nylon pendant rove through a heavy ring free to move on the pendant
C.two long legs of wire rope shackled to a fishplate
D.a single length of heavy chain with both ends secured on deck to welded pad eyes
最新試題
When hoisting a boat on gravity type davits using an electric motor driven winch，the davit arms should be brought up（）.
The process of lowering a boom to a horizontal position and onto its deck support is called（）.
The main advantage and chief characteristic of a Steulchen boom is that it can be（）.
The stevedores have already stowed the porcelain ware（）up to the deckhead.
Solid waste generation，and electricity and water consumption are costly and have their own set of environmental（）.
The Customer agrees to pay the full invoiced price，plus all other amounts payable to the（）Repairer under these terms and conditions，relating to or arising out of the Works for the Customer.
Which will cause a wire rope to fail（）.
When lowering lifeboats in heavy seas，a good practice is to rig frapping lines（）.
Which mooring line prevents sideways motion of a vessel moored to a pier（）.
The Repairer shall be relieved of all obligations under these terms and conditions caused by such all following matters except（）.