【简答题】An ideal gas is flowing in steady state
through a horizontal tube which has nonconducting walls. No heat is
added nor is any shaft work done. The cross-sectional area of the tube
changes with lengt...
【单选题】听力原文:W: Excuse me. Could you by any chance tell me where the dean's office is? M: I'm sorry. I'm just visiting a friend here. Q: What can be inferred about the man? (16)
A.
He's sorry he gave the woman the wrong directions.
【单选题】A string is wound tightly around a fixed pulley having a radius of 5.0 cm. As the string is pulled, the pulley rotates without any slipping of the string. What is the angular speed of the pulley when ...