A.beats
B.beasts
C.bacons
D.battens
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A.Globe valve
B.Butterfly valve
C.Gate valve
D.Packless valve
A.flow of petroleum through pipes
B.spraying or splashing of petroleum
C.settling of solids or water in petroleum
D.All of the above
A.brake
B.devil's claw
C.pawls
D.All of the above
A.The bow will go to port
B.The bow will go to starboard
C.The bow will remain steady
D.The stern will go to starboard
A.prevent the passage of flammable gases
B.prevent the passage of poisonous vapors
C.delay the spread of heat and flames
D.maintain watertight integrity
A.shape of the anchor
B.stowage of the anchor on board
C.anchor's ability to dig in
D.size of the vessel and its draft
A.swivel
B.cathead spool
C.drawworks
D.stand pipe
A.Sheath-screw davits
B.Gravity davits
C.Radial davits
D.Quadrantal davits
A.crow bar
B.device to force a water tight door against the frame
C.heavy steel beam
D.wedge
A.valve assembly
B.standpipe manifold
C.accumulator manifold
D.choke manifold
最新試題
Permission is kindly requested（）the ballast water.
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（）.
The function of the bypass valve on the self-contained breathing apparatus is to（）.
In relation to cargo gear，what does SWL mean?（）.
Limit switches are used on which davits?（）
On a ship，a door that is required to be marked KEEP CLOSED is designed to（）.
The most common type of davit found on merchant vessels today is the（）.
All electrical appliances aboard a vessel should be grounded to（）.
Anchors are prevented from running out when secured by the（）.
The rudders are amidships and both screws are going ahead. What will happen if the starboard screw is stopped?（）