在保证完成旅客运输任务的前提下，客车车底周转时间应该越（）越好。
参考答案：小
Jimmy can hardly _____ himself in the photo since it was taken years ago. [ ]
A. figure out
B. speak out
C. pick out
D. work out
下放直升机的桨距杆，可使桨叶安装角（）.
A.增大
B.减小
C.不变
