【简答题】1mol,p=101.325kPa,t=100 C的水蒸汽在恒温恒压下凝结为同温同压下的液态水,则此过程的W=------。
【单选题】Young people often feels that the age of eighteen is the ______.
B.
right age to get married
【单选题】在-10°C、101.325kPa下,1mol水凝结成冰的过程中,适用的公式是( )。
【单选题】( )是理解我国当前所处历史方位的关键词。
【单选题】Einstein’s Theory of Relativity is so________ that most of us can not understand it.
【简答题】5mol 理想气体的始态为 T 1 =25 °C, p 1 =101.325kPa ,体积为 V 1 ,在恒温下反抗恒定外压膨胀至 V 2 =3 V 1 , p ( 环境 ) =0.6 p 1 。求此系统所作的功。
【单选题】The passage tells us that the most probable reason for the death of the mice in Ader's experiment was that______.
A.
the sweetener was poisonous to them
B.
their immune systems had been altered by the mind
C.
they had been weakened physically by the saccharin
D.
they had taken too much sweetener during earlier conditioning
【单选题】在 -10℃、101.325kPa下,1mol水凝结成冰的过程中,下列哪个公式仍适用