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【判断题】
In this essay, the readers are told that historians disagree with each other, but they never disagree with themselves.A.
正确
B.
错误
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反馈参考答案：
举一反三
【多选题】. We _____ a trial order. If the quality is up to our expection, we shall send further orders.
A.
Place
B.
Revoke
C.
Stipulate
D.
Enclose
【单选题】A monopolist tries to sell one unit of experience good to a consumer for two periods. The quality of the good takes two levels, L and H, with L . The consumer's willingness to pay for the good is and...
A.
If the monopolist quality is high, he charges price equals to 1 and gains 1-c.
B.
If the monopolist quality is low, hecharges price equals to 1/2 and gains 1/2 −c.
C.
If the monopolist quality is high, he charges price equals to c and gains zero profit
D.
If the monopolist quality is low, he can be active in the market under full information
【单选题】If the quality is our expectation, we will place you our further orders.
A.
to，to
B.
with，to
C.
to，with
D.
at， with
【简答题】We enclose a trial order. If the quality is up to our expectation, we shall send further order in the near future. Your prompt attention to this will be appreciated.
【单选题】二重积分定义中，下列说法不正确的是（ ）
A.
在 上有界这一条件可去掉.
B.
分割细度 可以改为小区域的面积最大者.
C.
介点 的选取必须是任意的.
D.
二重积分 只与函数 和积分区域 有关，与积分变量 无关.
【多选题】下列关于定积分的几何应用的说法中,正确的是
A.
本课定积分的几何应用主要是两类：一是求平面图形的面积；二是求旋转体的体积
B.
求旋转体的体积时，同样一段曲线，一般说，绕x轴旋转和绕y轴旋转所形成的体积大小并不同
C.
一段曲线分别绕两个坐标轴旋转所形成的体积形状虽然不相同，但是体积是相同的
D.
本节求封闭的平面几何图形的面积问题，是定积分的几何意义，曲边梯形的推广
【单选题】If the quality is___to our expection,we shall send another order in the near future.
A.
high
B.
up
C.
close
D.
over
【简答题】翻译:( 5 分) We enclose a trial order. If the quality is up to our expectation, we shall send further order in the near future. Your prompt attention to this will be appreciated.
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