Before liquid can flow into a pump, the air in the suction line must be （） sufficiently to cause the liquid to flow into the suction chamber.

The depth of fuel oil in a tank is normally measured through the（）

The valve which is most suited for regulating the flow through a pipeline is a （）

Just after stopping the engine while the oil is still circulating.Check that uniform oil jets appear from all the oil outlet grooves in the crosshead bearing lower shell and the guide shoes.The oil flow from （） must be compared from unit; there should be a similarity in the flow patterns.

With respect to the flow of lubricating oil through a diesel engine, the lube oil coolers are located after filters in order to （）.

Propulsion engines and the vast majority of auxiliary generator engines are designed to allow a generous through-flow of scavenge air in order to control （）

The supply chain activities encompass all associated with the flow and transaction of goods, the flow of information from the raw materials supplier to the end user, as well as the reverse flow of materials and in formation in the（）

If cooling water flow through the after-cooler is interrupted,the power output of a turbocharged diesel engine will drop because the （）

When the current flow through a copper wire increases, its （）

A customer has a Fibre Channel switch residing in a configuration where both production and test data coexist. Which of the following is the simplest method for ensuring that the two types of data do not flow through the same port?（）

Compensated flow control or constant flow valves are used in hydraulic systems to（）

Under centrifugal pumps are the volute, diffuser, mixed-flow, axial flow and （） or regenerative types.