A:E=2E0,T=T0,P=2P0
B:E=E0,T=T0,P=2P0
C:E=2E0,T=T0,P=2P0
D:E=2E0,T=T0,P=4P0
如图实验基本操作正确的是( )
—_______?
—I often feel stressed out.
写出三国时期有关的成语或典故(最少三个)
请结合下图回答实验室制备气体的问题: