In motor ship, () is often used to recover some of the heat carried in the exhaust gases from the main engine.
时间:2022-09-02
If the head pressure of a reciprocating refrigeration compressor is excessive, ().
时间:2022-09-01
For a L√Opurifier, if the back pressure of the oil outlet is too high, the interface between oil and water in the bowl will ().
Dual electro-hydraulic steering units usually operate ().
The discharge rate or capacity of a centrifugal pump will vary directly as the ().
As for a hydraulic vane pump, which of the following is in contact with the vanes during working: () (1)the rotor (2)the pump shaft (3)the external surface of the housing
A liquid indicator sight glass is useful in determining whether or not a refrigeration system is sufficiently chargedIt is generally located in the().
Thermostatic expansion valves can be adjusted for ().
The suction - force principle of operation is a typical characteristic of ().
时间:2022-08-31
It is possible to mount a double suction centrifugal pump impeller with the vanes facing in the wrong directionThis would cause the pump ().
All bilge suctions must be fitted with suitable (), which in the machinery space would be mud boxes positioned at floor plate level for easy access.
The sensing line for the low pressure cutout switch to a refrigeration system is located ().
Excessive lube oil consumption by a reciprocating air compressor can be caused by ().
射线检测的特点包括()。
Safety valves on a boiler vent to the ().