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【单选题】
冲激函数 的拉普拉斯变换为A.
1
B.
2
C.
3
D.
4
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反馈参考答案：
举一反三
【单选题】听力原文：W: Does the book have a happy ending? M: It was hard to tell whether the hero was going to die in the war or come home and marry his childhood sweetheart. Q: What did the man say about the ending...
A.
He says nothing.
B.
He was confused at the end.
C.
The hero died in the car.
D.
The hero married his sweetheart.
【单选题】对于正态分布曲线的描述正确的是
A.
当 s 不变时，随着 μ 增大，曲线向右移
B.
当 s 不变时，随着 μ 增大，曲线向左移
C.
当 μ 不变时，随着 s 增大，曲线向右移
D.
当 μ 不变时，随着 s 增大， 曲线将没有变化
E.
以上说法均不正确
【简答题】雑誌を読まない
【单选题】下列有关正态曲线的描述,不正确的是
A.
曲线以平均数为对称轴
B.
y 值越大， P 值越大
C.
曲线与 x 轴之间区域的面积为 1
D.
曲线呈现 ‘ 中间高，两边低 ’ 的形状
【简答题】语法填空 He is the man who for many people has been a role model. Now your biggest hero deserves a special day when you can express your thanks and let him know 1.________important he is to you. The third...
【单选题】Which of the following underlined parts does not serve as an appositive?
A.
We hav e two children, a boy and a girl .
B.
The young man died a hero in the war.
C.
He's gotten a job tonight driving a truck .
D.
We've none of us passed the exam.
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