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
The series of valves used to control the return flow in well control operations is called the（）.
The purpose of a bilge well is to（）.
An example of a messenger is a（）.
In ship construction，keel scantlings should be the greatest（）.
The most common type of davit found on merchant vessels today is the（）.
The extension of the after part of the keel in a single-screw vessel upon which the stern post rests is called the（）.
Cargo pump relief valves are piped to the（）.
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（）.
Anchors are prevented from running out when secured by the（）.
An LWT anchor often has difficulty tripping in（）.