GM envisions a system（）the Mobility In

1、In a domestic fresh water system, the

In a domestic fresh water system, the pump starters are controlled by （） switches which operate when the pressure in the tank varies within predetermined limits as water is drawn off.Awater levelBwater flowCtemperatureDpressure

2、A cutoff valve in the fire-main system

A cutoff valve in the fire-main system of a ship may be closed to protect the portion of the system on an exposed deck from（）.Adamage from crane operationsBbeing used for wash down purposesCaccidental diversion of flow to wrong locationDfreezing

3、In a typical fuel system, the oil is s

In a typical fuel system, the oil is stored in （） in the double bottom.Asetting tanksBservice tanksCtanksDdrain tank

4、In a refrigeration system, if the cool

In a refrigeration system, if the cooling water to the condenser fails, the（）.Abox temperature solenoid valve will closeBexpansion valve will closeCcompressor will shutdownDking valve will ope

5、In the refrigeration system, a shortag

In the refrigeration system, a shortage of refrigerant is indicated by （）.Athe compressor short cycling on high pressure cut out switchBhigh suction pressureChigh head pressureDbubbles in the sight gla

6、A system administrator is in the proce

A system administrator is in the process of performing a preservation installation. However, the machine keeps booting up in diagnostic mode. Wh...