A.advance
B.cavitation
C.edging
D.slip
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A.a not knowing
B.an unknowing
C.an unknown
D.a not known
A.brake
B.devil's claw
C.pawls
D.All of the above
A.sand
B.soft soil
C.stiff clay
D.heterogeneous soil
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
最新試題
In nautical terminology a dog is a（）.
Limit switches are used on which davits?（）
The function of the bypass valve on the self-contained breathing apparatus is to（）.
As oil pipe line connections were broken，（）quantity of oil was caused to spill onto the wharf and into the dock water.
In ship construction，keel scantlings should be the greatest（）.
The most common type of davit found on merchant vessels today is 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（）.
The portable radio apparatus means（）.
The purpose of a bilge well is to（）.
The boat is stowed on the davit rather than on a cradle with which type of davit?（）