单项选择题
In reference to air conditioning, when air attains the maximum amount of moisture it can hold at a specific temperature, it is said to be ().
A.superheated
B.saturated
C.condensed
D.convected
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相关考题
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单项选择题
An axial轴向 piston pump differs from a radial piston pump as the pistons of an axial piston pump are positioned ().
A.radially from the shaft
B.parallel to each other and to the shaft
C.parallel to each other but at a right angle to the shaft
D.at an angle to each other and to the shaft -
单项选择题
The usual number of single-acting pistons used in a variable stroke axial-piston pump is ().
A.3 or 5
B.5 or 7
C.7 or 9
D.9 or 11 -
单项选择题
The heat identified by only a change in temperature is known as ().
A.sensible heat
B.latent heat
C.total heat
D.residual heat
