A.necessity
B.responsibility
C.requirement
D.stipulation
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A.to windward should be opened and the ones to leeward should be closed
B.to leeward should be opened and the ones to windward should be closed
C.should be opened
D.should be closed
A.squaring the corners
B.rounding the corners
C.plug welding the corners
D.slot welding the corners
A.cast iron
B.forged steel
C.stainless steel
D.cast steel
A.timber or steel rails
B.locomotives or boilers
C.railway passenger coaches
D.motor vehicles
A.reduces and prevents corrosion of standing rigging
B.prevents corrosion of running rigging
C.reduces and prevents wear caused by the rubbing of one object against another
D.protects the body against extreme cold
最新試題
The angle at which the anchor flukes penetrate the soil is the（）.
Periodic surveys to renew the load line assignment for a ship must be made at intervals not exceeding（）.
The document on a vessel，annually endorsed by an American Bureau of Shipping surveyor，is called the（）.
The lines led forward from the bow and aft from the stern when a vessel is moored to the dock are（）.
Should the vessel have no deratisation certificate at the time of her delivery，she（）be held to be unseaworthy.
In which case is the IOPP Certificate of an inspected vessel NOT invalidated?（）
Hatch No.1 must be cleaned up to meet the（）of the cargo surveyors．
The bottom of the mast rests on a part of the keel called the mast（）.
The smallest size of flaw that can be detected on a radiograph examination of a weld will be indicated by the（）.
The angle between the flukes and the shank of an anchor is called the（）.