A.diverter bit
B.hole reamer
C.core bit
D.conventional bit
您可能感興趣的試卷
你可能感興趣的試題
A.A flashing amber light
B.A fixed red light
C.A white flag raised and lowered vertically
D.A flashing white light
A.at all times
B.in the bottom return mode
C.in the volume reverberation mode
D.only when there is no current
A.heavy
B.easily damaged
C.affected by temperature
D.costly relative to the strength ratio
A.stopper
B.screen
C.filter
D.restrictor
A.rising warm air
B.proximity to a low pressure area
C.inward spiraling circulation
D.clear dry weather
最新試題
A large basin cut into the shore，closed off by a caisson，and used for dry docking of ships is known as a（）.
It is not necessary to declare（）in the Health List.
A fire pump may be used for other purposes if（）.
An obstruction on a helodeck is any object that might present a hazard to the（）.
Entries should be made in a Ro-Ro vessel’s cargo-securing device record book for（）.
How could lashing gear used aboard Ro-Ro vessels be stowed when not in use? （）
An inert gas system on a tanker should be used to（）.
A safe fuel system must（）.
A heavy steel curved arch constructed athwartships and above the after deck on a towing vessel is sometimes called a（）.
A large metallic device，mounted directly in the piping (usually located at the dock near the point where the vapor hose is attached)，designed to prevent the passage of a rapidly moving flame through the piping is called a（）.