A.swivel
B.cathead spool
C.drawworks
D.stand pipe
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A.at each frame
B.amidships
C.one-third the distance from the bow
D.one-third the distance from the stern
A.greater at the bow and stern
B.reduced at the bow and stern
C.uniform over the length of the vessel
D.uniform over the length of the vessel，with the exception of the machinery spaces，where it is reduced due to increased stresses
A.Safe working load
B.Ship's working lift
C.Starboard wing lift
D.Stress，weight，load
A.crow bar
B.device to force a water tight door against the frame
C.heavy steel beam
D.wedge
A.that the fuel valve is open
B.if the air supply system is open
C.if the water sprinkler system is open
D.if the limit switch is on
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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 ship operations，hoisting and lowering pipe in and out of the drilled hole is the main function of the（）.
Centrifugal pumps have what advantage(s) over reciprocating pumps?（）.
An example of a modern anchor which has a stock is a(n)（）.
The holding capability of an anchor is primarily determined by the（）.
In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open?（）.
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（）.
The exhaust pipe must be gas tight throughout its entire length otherwise（）.
If a gasoline engine turns over freely but will not start，the cause is generally（）.
In ship construction，frame spacing is（）.