A.sand
B.soft soil
C.stiff clay
D.heterogeneous soil
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A.shear ram
B.blind ram
C.pipe ram
D.annular ram
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
最新試題
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（）.
If the engine of a survival craft does not start，check to see（）.
An example of a modern anchor which has a stock is a(n)（）.
In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open?（）.
The C02 flooding system is actuated by a sequence of steps which are（）.
The bypass valve on a self-contained breathing device should be opened if（）.
The portable radio apparatus means（）.
Each cylinder in a two stroke cycle engine experiences combustion（）.
In relation to cargo gear，what does SWL mean?（）.
In ship operations，hoisting and lowering pipe in and out of the drilled hole is the main function of the（）.