【简答题】It was not so much his appearance I liked as his personality.
【单选题】火车在长直水平轨道上匀速行驶,车厢内有一人向上跳起,发现仍落回到车上原处,这是因为
A.
人跳起时会受到一个向前的冲力,使他随火车一起向前运动
B.
人跳起的瞬间,车厢的地板给他一个向前的力,推动他随火车一起向前运动
C.
人跳起后,车继续前进,所以人落下后必定偏后一些,只是由于时间很短,偏后的距离很小,不明显而已
D.
人从跳起到落回地板,由于惯性,在水平方向上人和车始终具有相同的速度
【单选题】建筑物内的生活给水系统,当卫生器具给水配件处的静水压超过规定值时,宜采取( )措施。
【单选题】火车在长直水平轨道上匀速行驶,车厢内有一个人向上跳起,发现仍落回到车上原处,这是因为( )
A.
人跳起后,车厢内的空气给人一个向前的力,这力使他向前运动
B.
人跳起时,车厢对人一个向前的摩擦力,这力使人向前运动
C.
人跳起后,车继续向前运动,所以人下落后必定向后偏一些,只是由于时间很短,距离太小,不明显而已
【单选题】某建筑物内的生活给水系统,当卫生器具给水配件处的静水压超过规定值时,宜采取( )。
【单选题】惯性概念 火车在长直水平轨道上匀速行驶,车厢内有一人向上跳起,发现仍落回到车上原处,这是因为 ( )
A.
人跳起时会受到一个向前的冲力,使他随火车一起向前运动
B.
人跳起的瞬间,车厢的地板给他一个向前的力,推动他随火车一起向前运动
C.
人跳起后,车 继续前进,所以人落下后必定偏后一些,只是由于时间很短,偏后的距离很小,不明显而已
D.
人从跳起到落回地板,由于惯性,在水平方向上人和车始终具有相同的速度
【单选题】It was after he got what he had desired he realized it was not so important. [ ]
【单选题】M: Hello, Susan! How was your exam yesterday? W: Not so good. It was as easy as the last one, but it was longer than before. ( )13. Why didn't the woman do well on the exam?
C.
She didn't have enough time.
D.
She didn't work hard at all.
【单选题】It was after he got what he had wanted he realized it was not so important.
【简答题】It was raining as I got off the train in Nashville, Tennessee. I was tired so I went straight to my hotel. A big, heavy man was walking up and down in the hotel lobby. Something about the way he moved...