13．已知普朗克常量https://bgk-photo.cdn.bcebos.com/8c1001e93901213f6e01ecbc44e736d12f2e95a4.jpg，电子的质量为https://bgk-photo.cdn.bcebos.com/48540923dd54564e6e684659a3de9c82d1584f45.jpg，一个电子和一滴直径约为https://bgk-photo.cdn.bcebos.com/0823dd54564e92582c39248e8c82d158ccbf4e45.jpg的油滴具有相同动能，则电子与油滴的德布罗意波长之比的数量级为（    ）A、https://bgk-photo.cdn.bcebos.com/00e93901213fb80eace3c3b726d12f2eb93894a4.jpgB、https://bgk-photo.cdn.bcebos.com/3801213fb80e7bec8ce8a1813f2eb9389b506ba4.jpgC、https://bgk-photo.cdn.bcebos.com/203fb80e7bec54e7efdeb87ea9389b504fc26aa4.jpgD、https://bgk-photo.cdn.bcebos.com/b90e7bec54e736d1f5212e688b504fc2d56269a4.jpg