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An ________ is the airfoil on the tailplane of an aircraft that makes it ascend or descend.
If something is _______, it is in use.
An ______ is a motor that converts thermal energy to mechanical work.
____ means cease to work or get worse.
A _____ is a substance that is liquid at room temperature and pressure.
____ is a substance that can be consumed to produce energy.
The ________ is the central body of an airplane that is designed to accommodate the crew and passengers.
A ______ is a rubber ring which fills the gap between two surfaces in a machine.
A _________ is an engine that converts mechanical energy into electrical energy by electromagnetic induction.
If something is _________, it is moved or operated or effected by liquid.
The engine receives fuel through an ________.
If something is ________, its top and bottom are reversed.
If something is ______, it is stuck.
A _____ is an identifying or descriptive marker that is attached to an object.
If you push something to its ______, you are pushing it as far as it can go.
___________ is the act of keeping something in good working order.
A ______ is a small handbook.
A ________ is something that is used for making or doing something else.
