【简答题】站台上一观察者,在火车开动时站在第一节车厢的最前端,第一节车厢在 内从他身旁驶过。设火车作匀加速直线运动,问第n节车厢从他身旁驶过所需的时间间隔 为多少?令n=7,求 。
【单选题】如果一个孩子爱动、坐不住,说明他的顶叶非常发达。此时,最佳的教育方法是:
【单选题】火车以匀加速运动驶离站台。当火车刚开动时,站在第一节车厢前端相对应的站台位置上的静止观察者发现,第一节车厢从其身边驶过的时间是5.0 s。问第九节车厢驶过此观察者身边需要多少时间?
【单选题】Who’s Wang Hong ?
A.
CEO of the Dongfang Power Station
B.
Consultant Engineer with the Dongfang Power Station
C.
Contractor Representative for Civil Works, CFSC Corporation
【单选题】德租时期,青岛的中国传统建筑大都位于哪里?
【单选题】Task 1 Andy, Wang Hong and Dillion are in a meeting. Listen to the conversation and match the people with the correct information. Who’s Andy?
A.
CEO of the Dongfang Power Station
B.
Consultant Engineer with the Dongfang Power Station
C.
Contractor Representative for Civil Works, CFSC Corporation