下列实验操作不正确的是请选择DCBA1v6Q+[7[:h0s*|(C9m*s/X7x8l
A.*|(C9m*s/X7x8l
B.*|(C9m*s/X7x8l
C.*|(C9m*s/X7x8l
D.*|(C9m*s/X7x8l