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【单选题】
关于我国国防，说法不正确的是（ ）。A.
武装力量由中国人民解放军、中国人民武装警察部队、民兵组成
B.
陆军主要由步兵、装甲兵、炮兵、工程兵、通信兵、防化兵等兵种组成
C.
我国从l949年开始实行义务兵役制
D.
中央军委的总部机关包括总参谋部、总政治部、总后勤部、总装备部
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【单选题】Young people often feels that the age of eighteen is the ______.
A.
best time of life
B.
right age to get married
C.
hardest part of life
D.
gateway to happiness
【单选题】Eighteen is the ________________ voting age in our contry.
A.
competent
B.
minimal
C.
minimum
D.
matimum
【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( )。
A.
ΔU=TΔS
B.
ΔG=ΔH-TΔS
C.
ΔH=TΔS+VΔp
D.
ΔG=0
【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
A.
∆U = T∆S
B.
∆S = (∆H- ∆G)/T
C.
∆H = T∆S + V∆p
D.
∆GT,p = 0
【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.
they had been weakened psychologically by the saccharin
B.
the sweetener was poisonous to them
C.
their immune systems had been altered by the mind
D.
they had taken too much sweetener during earlier conditioning
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