下图所示实验操作中，正确的是请选择DCBA/O5P2S4e0F:?+D-~0z.?,k7]0u2i*D5};V1X1T+x;P7W1g2Z,a7A
A．2i*D5};V1X1T+x;P7W1g2Z,a7A
B．2i*D5};V1X1T+x;P7W1g2Z,a7A
C．2i*D5};V1X1T+x;P7W1g2Z,a7A
D．2i*D5};V1X1T+x;P7W1g2Z,a7A
2i*D5};V1X1T+x;P7W1g2Z,a7A
2i*D5};V1X1T+x;P7W1g2Z,a7A
2i*D5};V1X1T+x;P7W1g2Z,a7A
2i*D5};V1X1T+x;P7W1g2Z,a7A