2.下列化简错误的是( )
0 307052 307060 307066 307070 307076 307078 307082 307088 307090 307096 307102 307106 307108 307112 307118 307120 307126 307130 307132 307136 307138 307142 307144 307146 307147 307148 307150 307151 307152 307154 307156 307160 307162 307166 307168 307172 307178 307180 307186 307190 307192 307196 307202 307208 307210 307216 307220 307222 307228 307232 307238 307246 366461
| A. | $\sqrt{\frac{5}{12}}$=$\frac{\sqrt{15}}{6}$ | B. | $\sqrt{\frac{18}{5}}$=$\frac{3\sqrt{10}}{5}$ | C. | $\sqrt{\frac{7}{24}}$=$\frac{\sqrt{21}}{12}$ | D. | $\sqrt{\frac{3}{8}}$=$\frac{\sqrt{6}}{4}$ |