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【单选题】
投机风险的后果是( )A.
损失或者获利
B.
损失、无损失或者获利
C.
无损失
D.
损失
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反馈参考答案：
举一反三
【单选题】There _________a book and three pens on my desk just now，but now there is nothing on it.
A.
had
B.
were
C.
was
【简答题】根据下面函数表达式编写一个程序,实现输入x的值后能计算输出相应的函数值y的功能。
【简答题】只含有逗留点的曲线为________。
【单选题】听力原文：W: I need to get in touch with Microsoft. I'm having problems with the software. Do you know its website? M: Yeah. It's www. Microsoft. com. W: Do you think they will take care of my problems? M:...
A.
She needs them to help her resolve some software problems.
B.
She doesn't know its website.
C.
She needs them to take care of her.
D.
She needs them to help her resolve some hardware problems.
【简答题】商品包装设计的心理需求有哪些？
【简答题】计算函数值。输入实数 x ,根据下面函数式计算 y 的值。 y=(x+1)/(x-1)。提示: x 等于 1 时,函数无意义。
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