A.blocks have been overhauled
B.hauling parts of two tackles are attached
C.hauling part leads through the movable block
D.hauling part leads through the standing block
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A.one
B.two
C.three
D.four
A.emergency gear
B.drainage
C.deck cargo storage
D.securing gear
最新試題
Prior to magnetic particle inspection of anchor chain，the chain should be（）.
The platform that supports the derrickman when tripping pipe is called the（）.
Damaged bulkheads often take a permanent set which is independent of the panting or bulge caused by water pressure. To control this，you should（）.
Regulations require that access to a cargo pumproom in a tanker carrying grade D liquid cargo，shall be（）.
Gross tonnage indicates the vessel’s（）.
Grinding to eliminate shallow surface defects should be done（）.
The opening in the deck that leads the anchor cable outside the hull is the（）.
Pollution regulations require that each scupper in an enclosed deck area have a（）.
Shell plating is（）.
The perforated，elevated bottom of the chain locker，which prevents the chains from touching the main locker bottom and allows seepage water to flow to the drains，is called a（）.