【单选题】脱轨系指机车车辆的车轮落下轨面(包括脱轨后又自行复轨),或车轮()顶部高于轨面(因作业需要的除外)
【单选题】脱轨是指机车车辆的车轮落下轨面(包括脱轨之后又自行复轨)或车轮轮缘顶部()轨面(因作业除外)。
【判断题】机车、车辆、动车、重型轨道车(包括拖车)的车轮落下轨面(包括脱轨后又自行复轨)的就是脱轨事故。
【判断题】JPA的save接口,只能用做新增,不可用于修改。
【单选题】Would you please buy some paper on your way to the office? There______left.
【单选题】各力作用线在同一平面内且汇交于一点的力系称为( )。
【判断题】脱轨指机车车辆的车轮落下轨面(包括脱轨后又自行复轨),或车轮轮缘顶部高于轨面(因作业需要的除外)。
【单选题】脱轨是指机车车辆的车轮落下轨面(包括脱轨之后又自行复轨)或车轮轮缘顶部(D)轨面(因作业除外)。
【单选题】Please remember _____ some newspapers for me on your way back. [ ]
【单选题】Reading the following passage and tick your answer 1 . what does Buy Nothing Day mean?
A.
It's a special day when people are encouraged not to buy anything.
B.
On that day, shops are all closed , so you can't buy anything.
C.
On that day, shops are soo crowded that you can't get what you want.