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【多选题】
理想高弹体在形变过程中,保持()A.
内能不变
B.
熵不变
C.
体积不变
D.
分子链的构象不变
E.
自由能不变
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【简答题】阅读理解。 The Greenest School in Britain The pupils and teachers at Fairfield School think it's worth looking after the environment! This is what they've been doing: Growing vegetables Fairfield School pu...
【单选题】The School Where Pupils Rate Their Teachers Pupils observe their teacher at the George Mitchell School in London There is nothing on the outside of George Mitchell School, in east London, to show that...
A.
Having more than four children.
B.
Having a high BMI.
C.
Spending a long time in the sun.
【多选题】如有两个投资方案,原始投资额不同,彼此互相排斥,各方案项目寿命不同,可以采用下列哪些方法进行选优( )。
A.
内含报酬率法
B.
净现值法
C.
等额年金法
D.
共同年限法
【简答题】The pupils were quieted at once on the teacher's threat to keep them in after school. When the teacher __________ keep the pupils in after school they were quieted at once. (threaten)
【单选题】_________ all the pupils in the school felt the same effect of small classes remains to be researched.
A.
That
B.
Whether
C.
What
D.
If
【单选题】下列三个结论中,所有正确结论的序号是() (1)若集合A=(-∞,3],B=(-2,+∞),则A∩B=(-2,3] (2)不等式(5x-1)^2>0的解集是R (3)若p:x∈{x丨丨x丨≤5},q:x∈{x丨x^2≤25},则条件p是结论q成立的充要条件
A.
(2)
B.
(3)
C.
(1)(3)
D.
(2)(3)
【简答题】When the foreigners appeared in the school, the pupils smiled at them friendly . A B C D
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