【单选题】如果两台发电机组已经并联运行一段时间,则下列描述不正确的是______。
【单选题】床宽的最小界限是( ),小于这个尺寸会影响睡眠质量。
【简答题】A: Hi, David. Would you please do me a favor? B: Yes, please. A: Please help me to move the table into the room. B: No problem. A: Here we are. Thank you very much. B: It's my pleasure. A: Excuse me, ...
【单选题】---Hi,David.Would you please do me a favor? ---__________.