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【多选题】
旅游者与旅游环境系统的相互作用主要特点包括()A.
共轭性
B.
负相关性
C.
正相关性
D.
时空差异性
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反馈参考答案：
举一反三
【简答题】 Write the definition of the following terms: Total pressure total temperature Excess air coefficient
【单选题】In terms of pressure and temperature refrigerant in the compressor, what happens to the primary?
A.
Its pressure and temperature are both lowered
B.
Its pressure and temperature are both raised
C.
Its pressure is lowered and its temperature is raised
D.
Its pressure is raised and its temperature is lowered
【判断题】we can assume viscosity multiply z factor is constant at high pressure, and flow equation can be written in terms of pressure squared.
A.
正确
B.
错误
【简答题】若函数 在 处连续,则
【单选题】Which of the following terms is used to identify the pressure of the liquid entering a pump?
A.
Suction head
B.
Pump head
C.
Discharge head
D.
Total head
【多选题】To express diffusivity equation in terms of pressure and time , we assume ( ) .
A.
=constant
B.
=constant
C.
=constant
D.
=constant
【单选题】Barometer readings in weather reports are given in terms of pressure at ______.
A.
sea level
B.
China Sea
C.
the weather station
D.
the broadcasting station
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