A.pump out
B.to pump out
C.pumping out
D.be pumped out
您可能感興趣的試卷
你可能感興趣的試題
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.Sheath-screw davits
B.Gravity davits
C.Radial davits
D.Quadrantal davits
A.Globe valve
B.Butterfly valve
C.Gate valve
D.Packless valve
A.swivel
B.cathead spool
C.drawworks
D.stand pipe
A.at each frame
B.amidships
C.one-third the distance from the bow
D.one-third the distance from the stern
最新試題
The bypass valve on a self-contained breathing device should be opened if().
In nautical terminology a dog is a().
If a gasoline engine turns over freely but will not start,the cause is generally().
The holding capability of an anchor is primarily determined by the().
The portable radio apparatus means().
The purpose of a bilge well is to().
In ship operations,hoisting and lowering pipe in and out of the drilled hole is the main function of the().
The rudders are amidships and both screws are going ahead. What will happen if the starboard screw is stopped?()
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 C02 flooding system is actuated by a sequence of steps which are().