当燃气初温不太高时，透平叶片只要采用（）的方法就可以了。
参考答案：叶根吹风冷却
工单负责人收到审批后的工单进行具体操作，处理完成后提交工单验收人，若验收通过则关闭工单，否则重新处理。
The team will move a speed of 15 kilometers per hour, and have a short break every 2 hours. During the break they will tell stories_______ English.
A．with ; by
B．at ; with
C．in ; at
D．at ; in
