Anchor capstans are used in some installation where the cable lifter rotates about a ().
时间:2022-11-04
Which of the following pumps are self-priming, and can deal with liquid from a level below the pump? () (1) reciprocating (2) vane (3) gear
Coalescence is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and () in size.
After a normal, or safety shutdown, automatic combustion control systems for an auxiliary boiler are designed to prevent the immediate re-firing of a burner in order for the ().
In reference to air conditioning, when air attains the maximum amount of moisture it can hold at a specific temperature, it is said to be ().
If a liquid sight flow indicator in a refrigeration system shows gas bubbles in motion passing inside of the glass, there is ().
If liquid refrigerant accidentally comes in contact with the eyes, () immediately.
The drive motor will have a brake arranged to fail-safe, i√eit will () the load if power fails or machine is stopped.
All bilge suction must be fitted with suitable (), which in the machinery space would be mud boxes positioned at floor-plate level for easy access.
The function of () in a refrigeration plant using Freon is to move moisture from all refrigeration system.
When the desired rudder angle is attained by a typical double mm electro-hydraulic steering gear,the().
时间:2022-11-03
Badly leaking refrigeration compressor discharge valves will cause().
The furnace of an oil fired boiler should be () before the operating burner is lit.
Which of the following modes of heat transfer does NOT require any physical contact between a warmer and a cooler substance?()
时间:2022-11-02
The latent heat of evaporation is dissipated in the () in a compression refrigeration system.