下列符号不具有宏观意义，只具有微观意义的是请选择ABCD+@-o,m3z8o,T9F:~9E8y(~(G0P9o(Y'R'~*G3W2N.u2i'A4G2f
A．Fe(G0P9o(Y'R'~*G3W2N.u2i'A4G2f
B．2O2(G0P9o(Y'R'~*G3W2N.u2i'A4G2f
C．H2SO4(G0P9o(Y'R'~*G3W2N.u2i'A4G2f
D．NaCl(G0P9o(Y'R'~*G3W2N.u2i'A4G2f