最少要用三个完全一样的等边三角形才能拼成一个等腰梯形.______.
如图:三个同样的等边三角形可以拼成一个等腰梯形,说法正确;
故答案为:正确.
Buying clothes a hard job because the clothes a person likes not very often fit him or her.
A.are: d0
B.is; does
C.are; does
D.is; do
我们通常把穿过某一垂直截面的磁力线()称为磁通。
A、密度
B、条数
C、长短
D、大小