A.拖延δ B.拖延δ-TF C.拖延TF+δ D.拖延TF-δ
A.10 B.11 C.12 D.14
A.自由時(shí)差等于總時(shí)差 B.自由時(shí)差大于總時(shí)差 C.自由時(shí)差小于總時(shí)差 D.自由時(shí)差不超過總時(shí)差