在数据13,2,5,-2,π中,无理数有2,5,π,一共3个.
故选C.
.
He made a big mistake, and _________, he lost his job.
A.as a result
B.as soon as
C.in case
D.even if
我国托盘规格与国际标准化组织规定的通用尺寸一致,主要有三个规格()、800mm×1200mm、1000mm×1200mm。