A.積分時(shí)間置∞、微分時(shí)間置∞; B.積分時(shí)間置0、微分時(shí)間置∞ C.積分時(shí)間置∞,微分時(shí)間置0; D.積分時(shí)間置0,微分時(shí)間置0