TheChinesenationhas()significantlytotheprogressofhumancivilization.
A. related
B. contributed
C. owed
D. attached
无砟轨道扣件出现()状态或伤损,应进行修理或更换。
A. 零部件损坏
B. 预埋套管损坏
C. 锚固螺栓扭矩不满足要求
D. 弹性垫板静刚度超过设计上线的25%
“为方博达,不名一师,所治种种皆通”是指()选项
A. 钱乙
B. 朱震亨
C. 严君平
D. 江民莹
E. 罗知悌
Thebees()outoftheirhive.
A. flocked
B. swarmed
C. packed
D. crowded