如图所示实验操作正确的是 请选择ABCD(M*w*]*r0h1j+Z2~-T1X7z1j*w*h-~
A.+Z2~-T1X7z1j*w*h-~
B.+Z2~-T1X7z1j*w*h-~
C.+Z2~-T1X7z1j*w*h-~
D.+Z2~-T1X7z1j*w*h-~