In the refrigeration system, a shortage of refrigerant is indicated by
A.the compressor short cycling on high pressure cut out switch
B.high suction pressure
C.high head pressure
D.bubbles in the sight glass
第1题:
文中( 3 )处正确的答案是( )。
A.scarcity
B.1ack
C.deficiency
D.shortage
第2题:
第3题:
SHO的英文全称(字母均小写)
第4题:
第5题:
GDI+主要封装于命名空间()之中。
A.System.Drawing
B.System.Net
C.System.Xml
D.System.IO
第6题:
输气站——又称为压气站。核心设备和建筑:压缩机、压缩机车间。Gas station -- also known as compressor station. Core equipment and construction: compressor, compressor workshop.