A.["eggs","milk","cookies"] B.["eggs","bread"] C.["eggs","milk","bread","cookies"] D.["milk","bread"]
A.全不正確 B.varc=a.push()+b.push() C.varc=a.concat(b) D.varc=a.join(b)
輸出結(jié)果是()。
A.100 100 100 2 B.100 100 22 C.100 2 100 2 D.100 2 2 2