14.下列各式中最简二次根式为( )
0 282545 282553 282559 282563 282569 282571 282575 282581 282583 282589 282595 282599 282601 282605 282611 282613 282619 282623 282625 282629 282631 282635 282637 282639 282640 282641 282643 282644 282645 282647 282649 282653 282655 282659 282661 282665 282671 282673 282679 282683 282685 282689 282695 282701 282703 282709 282713 282715 282721 282725 282731 282739 366461
| A. | $\sqrt{3}$ | B. | $\sqrt{{x}^{2}}$ | C. | $\sqrt{0.7}$ | D. | $\sqrt{\frac{1}{3}}$ |