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听力原文:M: I suppose you must have heard about that great piece of concrete falling onto a car in that terrible accident in South Street yesterday, didn't you, Jane? W: Yes, I saw it in the paper. From a 200-foot high building, wasn't it? I gather the driver had just got out or he'd have been killed, wouldn't he? M: Oh, yes. I saw the car it was totally damaged. W: You usually park your car around there, don' t you, Bill? M: Yes, I left it in that very spot a couple of days ago, but yesterday it was parked up the road. W: You were lucky then, weren't you, Bill? M: Out of luck, you mean! I'd be very pleased if my old car were smashed to bits. I could claim from the insurance company then, couldn't I? W: But you used to be so proud of your car, didn't you? M: I used to be years ago, but now there are all sorts of repairs to be done, and I just haven't got enough spare cash to put it right. W: You can always sell it, can't you? M: Few people are stupid enough to buy a car in that State, aren't they? W: The man whose car was crushed yesterday was very annoyed about it. He'll be given a new car by the builders, though. M: Yes, but his car was a specially built model that can't be replaced, and there was hardly anything wrong with it, was there? W: Well, that's life! When people actually want to get rid of their cars, this sort of thing seldom happens, does it? (23)
A.
There was a traffic accident.
B.
A car was smashed by a falling object.
C.
A car hit someone near the high building.
D.
A driver was killed in his new car.
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【单选题】某双极型三极管多级放大电路中,测得Au1 =25, Au2 =-10 ,Au3≈1,则可判断这三级电路的组态分别是( )。
A.
共射极、共基极、共集电极
B.
共基极、共射极、共集电极
C.
共基极、共基极、共集电极
D.
共集电极、共基极、共基极
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【判断题】承受偏心拉伸(压缩)的杆件,其中性轴仍然通过横截面的形心。
A.
正确
B.
错误
【单选题】以下属于机动车辆保险的基本险种的是( )
A.
机动车辆损失保险
B.
无过失责任险
C.
车上人员责任险
D.
自燃损失险
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【单选题】压应力等于零时,岩石抵抗剪切破坏的最大能力称为岩石的()。
A.
抗剪断强度
B.
抗拉强度
C.
抗切强度
D.
抗剪强度
【单选题】(2分) 下面 Matlab程序代码产生的是一个600Hz的正弦波信号,由于显示的是全部信号的波形,细节看不清楚,我们可以用如下的哪个函数来改进这一点.
A.
grid
B.
subplot
C.
title
D.
axis
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【判断题】承受偏心拉伸(压缩)的杆件,其中性轴仍然通过横截面的形心。( )
A.
正确
B.
错误
【单选题】下列说法正确的是
A.
我们可以使用 plt.figure() 来设置整个图形的总标题
B.
我们可以使用 subplot2grid 定制我们的绘图布局
C.
plt.rcparams[‘axes.unicode_minus’]=false 表示解决保存图像是正号 ’+’ 显示为方块的问题
D.
python 包括的可视化模块为: matplotlib 和 bokeh
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