Machinery operating features are designed to help conserve energy.Which of the following results will not contribute to energy conservation?()
时间:2022-11-10
As for an oil-fired boiler if at a normal steaming condition and water goes out of sight in gauge glasses the action you should take is: () (1) secure oil to fires (2) increase feed pump pressure
If an operating bilge pump is developing good vacuum, but is unable to discharge any water, which of the following problems is the most probable cause?()
Refrigerant enters the condenser as a ().
Which of the devices listed is common to all types of pumps?()
The valve best suited for throttling gas or liquid flow in a pipeline is the().
Which of the following statements is true concerning the overall efficiency of air compressors?()
时间:2022-11-09
After fitting back in place the gear wheels, don’t forget to () them.
Which of the following statements is correct concerning the “flash point ” of a liquid?()
If you were operating a centrifugal water service pump with worn wearing rings, the ().
The structural members of the hull extending in a fore and aft direction are called ().
时间:2022-11-08
The movement of heat within a fluid, caused by the application of thermal energy, is called ().
当柴油机冷却液消耗反常时表现为()。
When the temperature of the refrigerant flowing out from the condenser is below the condensing temperature, it is said to be ().
High-speed rotation in a centrifugal purifier can produce a force () the force of gravity.