Thermostatic expansion valves can be a

1、A subquery can be used to （）.

A subquery can be used to （）.A Create groups of dataB Sort data in a specific orderC Convert data to a different formatD Retrieve data based on an unknown conditio

2、How many expansion frames can be attac

How many expansion frames can be attached to an IBM TS3500 model L23 or L53 base frame? （）A 15B 16C 17D 18

3、The expansion valve on a Freon system

The expansion valve on a Freon system controls the （）.Asuperheat of the gas leaving the compressorBback pressure in the evaporatorCtemperature of the iceboxDsuperheat of the gas leaving the evaporator

4、The thermal expansion valve reacts dir

The thermal expansion valve reacts directly to the （）Atemperature in the space being cooledBliquid refrigerant pressure at the solenoid valveCpressure drop across the evaporator coilsDrefrigerant gas superheat at the coil outlet

5、A three-way thermostatic control valve

A three-way thermostatic control valve regulates the diesel engine cooling water temperature by passing a portion of the water （）.Aaround the engineBaround the coolerCto the expansion tankDoverboard

6、During working, thermostatic expansion

During working, thermostatic expansion valve should be （）.Aeither all the way open or all the way closedBnormally fully openCthrottled depending on loadDcontrolled by liquefied pressure