25×16=25×8×8______.
25×16,
=(25×4)×4,
=100×4,
=400;
因此,25×16=25×8×8.是错误的.
故答案为:×.
For immediate delivery, tell the company ________you are and they'll send the goods to you.[ ]
A.where
B.who
C.what
D.how
如图所示,将两端开口的玻璃筒下端扎上橡皮薄膜,竖直插入盛有水的烧杯中,橡皮薄膜向上凹进,然后向玻璃筒内缓慢注入某种液体,当橡皮薄膜变平时,测得橡皮薄膜在水中的深度为11cm,筒内液体的深度是10cm,则筒内液体的密度是 kg/m3。