A.vernier
B.psychrometer
C.hygrometer
D.stadimeter
您可能感興趣的試卷
你可能感興趣的試題
A.information or regulatory buoy that has lateral significance
B.buoy that is off-station and is marked to warn mariners of its wrong position
C.dual purpose marking used where the ICW and other waterways coincide
D.buoy that was set in error and will be replaced with a red nun buoy
A.drill stem guide
B.guide frame
C.drill string frame
D.casing guide
A.increasing the righting moment
B.decreasing the vessel's displacement
C.increasing the reserve buoyancy
D.shifting the CG (center of gravity) off center
A.one control
B.two controls
C.three controls
D.none of the above
A.anchored
B.underway but not fishing
C.tending a small fishing boat
D.fishing by trawling
最新試題
A fishing vessel casualty must be reported to the Coast Guard if it involves（）.
A large valve，usually installed above the ram preventers，that forms a seal in the annular space between the pipe and wellbore or，if no pipe is present，on the wellbore itself is called the（）.
An inert gas system installed on a tanker is designed to（）.
All ships（）suspected infectious disease on board should radio information to Port Health Officer.
A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?（）
A safe fuel system must（）.
Cargo transfer operations on a tank vessel need NOT be stopped when（）.
Please supply 200 tons of fresh water（）my ship.
Between 1830 hrs and 1850 hrs this day，strong gusty winds（）by my vessel，in consequence of which the vessel’s four mooring lines were broken.
It is not necessary to declare（）in the Health List.