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【单选题】
合同的变更,是在( )不改变的前提下对( )的变更, ( )并不改变。A.
合同内容，合同主体或标的，合同性质和标的性质
B.
合同主体，合同内容或标的，合同性质和标的性质
C.
合同内容，合同内容或标的，合同性质和标的性质
D.
合同主体，合同主体或标的，合同性质和标的性质
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反馈参考答案：
举一反三
【简答题】根据所用基质的属性,可以将基质栽培再分为( )、( )、( )。
【单选题】Listen to the following dialogue, and then choose the best answer for the question. Q: What did the man mean?
A.
He wrote it last semester.
B.
He ' ll finish it in a few minutes.
C.
He isn ' t going to write it.
D.
He never does assignments early.
【单选题】Listen to the following dialogue, and then choose the best answer for the question. Q: What did the man mean?
A.
He hadn ' t been there.
B.
He didn ' t like it.
C.
He didn ' t care.
D.
He wasn ' t careful.
【简答题】通常根据网络范围和计算机之间的距离将计算机网络分为 、 和
【单选题】Listen to the short dialogues and choose the best answer to each question. What does the woman mean?
A.
She will show the man the schedule.
B.
She lost her copy of the schedule.
C.
She doesn't think the man has an appointment with Ms Lee.
D.
She finds a mistake in the schedule.
【单选题】Listen to the following dialogue, and then choose the best answer for the question. Q: What does the woman mean?
A.
She couldn' t make up her mind.
B.
She doesn' t have time for a job.
C.
She' d like to have a company of her own.
D.
She has a mind of her own.
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