This kind of desk is wood, and it is made Hunan.
A:made of; from
B:made from; in
C:made of; in
D:made from; from
如图,在三棱锥P﹣ABC中,E,F分别为AC,BC的中点.
(1)求证:EF∥平面PAB;
(2)若平面PAC⊥平面ABC,且PA=PC,∠ABC=90°,求证:平面PEF⊥平面PBC.
关于“用药和急救,健康的生活方式”的下列做法和解释,你认同的是( )