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【单选题】
关于热和功,下面的说法中不正确的是()A.
功和热只出现于系统状态变化的过程中 , 只存在于系统和环境间的界面上
B.
功和热不是能量,而是能量传递的两种形式,可称之为被交换的能量
C.
只有在封闭系统发生的过程中,功和热明确的意义
D.
封闭系统中发生的过程中,如果热力学能不变,则功和热对系统的影响必互相抵消
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【简答题】完形填空。 What would you do if a stranger gave you some medicine and said it would keep you thin or help you do well on exam?Would you _1_ it? Sometimes this takes place at some schools in the south. 2_ t...
【单选题】根据护士能力、职称、学历等不同进行科学分级,并安排相应职级的岗位,做到人尽其才、才尽其用,体现了管理的( )
A.
弹性原则
B.
整分合原则
C.
反馈原则
D.
能级原则
【简答题】设f(x)和g(x)在(－∞，+∞)内都可导，且有fˊ(x)＞gˊ(x)，f(a)＝g(a)，证明：当x＞a时，f(x)＞g(x)；当x＜a时，f(x)＜g(x)．
【单选题】If a friend said something bad______you, what would you do? [ ]
A.
about
B.
to
C.
for
【单选题】.根据护士能力、职称、学历等不同进行科学分级,并安排相应职级的岗位,做到人尽其才、才尽其用,体现了管理的( )
A.
整分合原则
B.
弹性原则
C.
反馈原则
D.
能级原则
【简答题】阅读短文，选择正确答案。 What would you do if a stranger gave you some medicine and said it would keep you slim or help you do well in exams? Would you take it? Students at Shenzhen Luohu Foreign Language Middle ...
【简答题】设函数f（x）是定义在R上的奇函数，当x＜0时，f（x）=x（1+x），则当x＞0时，f（x）=______．
【简答题】—Would you like to tell me what our teacher said just now? —She said that light__________faster than sound. A．travels B．traveled C．would travel D．was traveling
【简答题】设f"(x)＞0(＜0)，当x→0时，f(x)～x，证明：当x≠0时，f(x)＞x(＜x)
【单选题】—You said we would have a picnic next Friday? —_____．But it will depend on the weather．
A.
OK
B.
You’ve got it right
C.
Good idea
D.
All right
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