A.shear ram
B.blind ram
C.pipe ram
D.annular ram
您可能感興趣的試卷
你可能感興趣的試題
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
In nautical terminology a dog is a（）.
Static electricity may be built up by the（）.
The connected joints of pipe，usually made of three joints of pipe approximately 90 feet long，racked in the derrick when making a trip are called a（）.
On a ship，a door that is required to be marked KEEP CLOSED is designed to（）.
Anchors are prevented from running out when secured by the（）.
The extension of the after part of the keel in a single-screw vessel upon which the stern post rests is called the（）.
In ship operations，hoisting and lowering pipe in and out of the drilled hole is the main function of the（）.
The boat is stowed on the davit rather than on a cradle with which type of davit?（）
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（）.
As the propeller turns，voids are formed on the trailing and leading edges of the propeller blades causing a loss of propulsive efficiency，pitting of the blades，and vibration. These voids are known as（）.