多项选择题 无粘结预应力混凝土施工方法的说法，正确的是（）。

单项选择题 听力原文：W: Did you see the doctor this morning, dear? What did he prescribe for you?M: Well, he said there was no need to take any medicine if I kept healthy diet and regular exercises.Q: What can we infer from the conversation?(16)A．Nothing could help the man if he did no exercises.B．No medicine could solve the man's problem.C．The man should eat more and do more exercises.D．Right food and proper exercises are important for the man's health.

多项选择题 在某些情况下，审计师可以采用消极式函证。这些情况包括（）。