Question

一個(gè)數(shù)的絕對(duì)值一定是

1. A.
   正數(shù)
2. B.
   負(fù)數(shù)
3. C.
   非負(fù)數(shù)
4. D.
   非正數(shù)

Answer 1

C
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：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．