A.shear ram
B.blind ram
C.pipe ram
D.annular ram
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A.articulated anchor
B.Flipper Delta anchor
C.Baldt anchor
D.Danforth anchor
A.fairlead
B.heaving line
C.stay
D.warp
A.prevent them from falling when the vessel rolls
B.protect personnel from electrical shock
C.increase their operating efficiency
D.prevent unauthorized personnel from operating them
A.actual depth of water
B.actual depth of water below keel
C.average depth from waterline to hard bottom
D.average depth of water to soft bottom
A.floors
B.intercostals
C.girders
D.stringers
最新試題
An example of a messenger is a（）.
An integral part of a blowout preventer that serves as the closing element on an open hole，and whose ends do not fit around the drill pipe but seal against each other and shut off the space below completely is the（）.
In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open?（）.
Permission is kindly requested（）the ballast water.
The rudders are amidships and both screws are going ahead. What will happen if the starboard screw is stopped?（）
The bypass valve on a self-contained breathing device should be opened if（）.
The holding capability of an anchor is primarily determined by the（）.
On a ship，a door that is required to be marked KEEP CLOSED is designed to（）.
The C02 flooding system is actuated by a sequence of steps which are（）.
All electrical appliances aboard a vessel should be grounded to（）.