皮皮学，免费搜题
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【单选题】
When an engine has just started there is no need to cool it, so a thermostat is intended to the flow of water the the radiator.A.
turn on
B.
turn off
C.
turn into
D.
turn down
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【简答题】给下列的问句选择对应的答语。 ( ) 1. Where does the rain come from? ( ) 2. How can the water become vapour? ( ) 3. What are you going to do this afternoon? ( ) 4. Is your aunt an accountant? ( ) ...
【单选题】In practice, the refrigerant flow after the evaporator is designed to ensure that the vapor leaving the evaporator is slightly _____.
A.
saturated
B.
super-cooled
C.
wet
D.
superheated
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