已知a，b，c都是负数，且|x-a|+|y-b|+|z-c|=0，则xyz是(_爱下问搜题

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问题选择题

已知a，b，c都是负数，且|x-a|+|y-b|+|z-c|=0，则xyz是( )

A.正数
B.非负数
C.负数
D.非正数

答案

答案：C

补全对话，情景问答

读一读，选择正确的问句。

( ) It is hot and sunny.
( ) I'm going to the office.
( ) He is driving a car.
( ) Across from the school.
( ) Yes, I want to buy a dress.

A. Where is the gym?
B. How is the weather?
C. May I help you?
D. What is he doing?
E. Where are you going?

名词解释

EDPS