Question

4、一個(gè)數(shù)的絕對(duì)值一定是（　�。�

A、正數(shù)

B、負(fù)數(shù)

C、非負(fù)數(shù)

D、非正數(shù)

Answer 1

分析：根據(jù)絕對(duì)值的定義，即正數(shù)的絕對(duì)值是它本身，負(fù)數(shù)的絕對(duì)值是它的相反數(shù)，0的絕對(duì)值還是0．

解答：解：一個(gè)數(shù)的絕對(duì)值一定是非負(fù)數(shù)．
故選C．

點(diǎn)評(píng)：此題主要考查了絕對(duì)值的定義，即正數(shù)的絕對(duì)值是它本身，負(fù)數(shù)的絕對(duì)值是它的相反數(shù)，0的絕對(duì)值還是0．