A foodhandler cannot work if they have foodpoisioning, and they cannot work for a few days afterwards (I forget how many, luckily I'm not a foodhandler).
No, refrigerators do not require a water line for operation.
No, the Pentax K1000 does not require a battery for operation as it is a fully mechanical camera.
No, an electric water heater does not require a vent for proper operation.
They don't want some psycho-path drugging their food!
Yes, window air conditioners require refrigerant, which is often referred to as Freon, for operation.
A drive or a motor
Yes, window AC units require refrigerant, such as Freon, for operation. Refrigerant is essential for the cooling process in the air conditioner.
No, active transducers require a power source for operation.
yes
YES
fever
No, a refrigerator does not require a water line for basic operation. However, some refrigerators with ice makers or water dispensers may need a water line for those features to function.